Sublime Security

Sublime Core Feed
Javascript analysis
Learn More
Login to Sublime
Attack Types
BEC/Fraud
Callback Phishing
Credential Phishing
Extortion
Malware/Ransomware
Reconnaissance
Spam
Tactics and Techniques
Encryption
Evasion
Exploit
Free email provider
Free file host
Free subdomain host
HTML smuggling
Image as content
Impersonation: Brand
Impersonation: Employee
Impersonation: VIP
IPFS
ISO
LNK
Lookalike domain
Macros
OneNote
Open redirect
Out of band pivot
PDF
Punycode
QR code
Scripting
Social engineering
Spoofing
Detection Methods
Archive analysis
Content analysis
Computer Vision
Exif analysis
File analysis
Header analysis
HTML analysis
Javascript analysis
Macro analysis
Natural Language Understanding
Optical Character Recognition
OLE analysis
PDF analysis
QR code analysis
Sender analysis
Threat intelligence
URL analysis
URL screenshot
Whois
XML analysis
YARA
Detection Method: Javascript analysis
JavaScript analysis inspects JavaScript code found in email messages, HTML attachments, and linked web pages to identify potential malicious behavior or suspicious patterns. It uses specialized techniques to spot obfuscated scripts, malicious functions, and known attack strategies.
JavaScript analysis can help you detect:
Obfuscated code designed to hide malicious intent
DOM manipulation attempts that lead to phishing or data theft
Event handlers that trigger actions when content is viewed
Suspicious API calls like document.write() or eval() that generate malicious content
Encoded strings that decode to payloads during runtime
For example, attackers often use obfuscated JavaScript to redirect you to phishing sites or to download malware. JavaScript analysis can uncover these threats even when the code is intentionally hidden.
Blog Post
Talking phish over turkey · Blog · Sublime Security
Sublime Security Attack Spotlight: Year-end credential phishing attacks.
Attack Types (3):
Credential Phishing
Malware/Ransomware
BEC/Fraud
Tactics & Techniques (10):
Evasion
Scripting
Free file host
Free subdomain host
HTML smuggling
Impersonation: Brand
Open redirect
Social engineering
Encryption
Out of band pivot
Rule Name & Severity
Last Updated
Types, Tactics & Capabilities
Link: JavaScript obfuscation with Telegram bot integration
1mo ago
Feb 25th, 2026
Sublime Security
Credential Phishing
Evasion
Scripting
Content analysis
Javascript analysis
URL analysis
Credential Phishing
Evasion
Scripting
Content analysis
Javascript analysis
URL analysis
Attachment: ICS with embedded Javascript in SVG file
1mo ago
Jan 29th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
Scripting
Evasion
File analysis
Javascript analysis
Sender analysis
Credential Phishing
Malware/Ransomware
Scripting
Evasion
File analysis
Javascript analysis
Sender analysis
Low reputation link to auto-downloaded HTML file with smuggling indicators
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Evasion
Free file host
Free subdomain host
HTML smuggling
Impersonation: Brand
Open redirect
Social engineering
Content analysis
File analysis
HTML analysis
Javascript analysis
Sender analysis
URL analysis
Credential Phishing
Evasion
Free file host
Free subdomain host
HTML smuggling
Impersonation: Brand
Open redirect
Social engineering
Content analysis
File analysis
HTML analysis
Javascript analysis
Sender analysis
URL analysis
Attachment: HTML attachment with login portal indicators
2mo ago
Jan 12th, 2026
Credential Phishing
HTML smuggling
Scripting
Archive analysis
File analysis
HTML analysis
Javascript analysis
Sender analysis
Credential Phishing
HTML smuggling
Scripting
Archive analysis
File analysis
HTML analysis
Javascript analysis
Sender analysis
Attachment: HTML file with reference to recipient and suspicious patterns
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
HTML smuggling
Scripting
Content analysis
File analysis
HTML analysis
Javascript analysis
YARA
Credential Phishing
HTML smuggling
Scripting
Content analysis
File analysis
HTML analysis
Javascript analysis
YARA
Attachment: HTML smuggling with atob and high entropy
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Sender analysis
URL analysis
Credential Phishing
Malware/Ransomware
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Sender analysis
URL analysis
Attachment: HTML smuggling with auto-downloaded file
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Sender analysis
URL analysis
Credential Phishing
Malware/Ransomware
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Sender analysis
URL analysis
Attachment: HTML smuggling with eval and atob
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Attachment: HTML smuggling with base64 encoded JavaScript function
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Credential Phishing
Malware/Ransomware
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Attachment: HTML smuggling with excessive line break obfuscation
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
Encryption
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Credential Phishing
Malware/Ransomware
Encryption
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Attachment: HTML smuggling Microsoft sign in
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Free subdomain host
HTML smuggling
Impersonation: Brand
Social engineering
Archive analysis
Content analysis
File analysis
Header analysis
Javascript analysis
Sender analysis
URL analysis
Credential Phishing
Free subdomain host
HTML smuggling
Impersonation: Brand
Social engineering
Archive analysis
Content analysis
File analysis
Header analysis
Javascript analysis
Sender analysis
URL analysis
Attachment: HTML smuggling with RC4 decryption
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
Encryption
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Credential Phishing
Malware/Ransomware
Encryption
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Attachment: HTML smuggling with setTimeout
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
HTML analysis
Javascript analysis
Attachment: HTML smuggling with unescape
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
Archive analysis
File analysis
HTML analysis
Javascript analysis
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
Archive analysis
File analysis
HTML analysis
Javascript analysis
Attachment: File execution via Javascript
2mo ago
Jan 12th, 2026
Sublime Security
Malware/Ransomware
Evasion
Scripting
Archive analysis
File analysis
Javascript analysis
Sender analysis
Malware/Ransomware
Evasion
Scripting
Archive analysis
File analysis
Javascript analysis
Sender analysis
Request for Quote or Purchase (RFQ|RFP) with HTML smuggling attachment
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Evasion
Content analysis
File analysis
HTML analysis
Javascript analysis
Natural Language Understanding
URL analysis
Credential Phishing
Evasion
Content analysis
File analysis
HTML analysis
Javascript analysis
Natural Language Understanding
URL analysis
Attachment: HTML smuggling with eval and atob via calendar invite
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
File analysis
HTML analysis
Javascript analysis
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
File analysis
HTML analysis
Javascript analysis
Attachment: HTML smuggling with ROT13
2mo ago
Jan 12th, 2026
@Kyle_Parrish_
Credential Phishing
Malware/Ransomware
Encryption
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
Javascript analysis
HTML analysis
Credential Phishing
Malware/Ransomware
Encryption
Evasion
HTML smuggling
Scripting
Archive analysis
Content analysis
File analysis
Javascript analysis
HTML analysis
Attachment: EML file contains HTML attachment with login portal indicators
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Evasion
HTML smuggling
Content analysis
File analysis
Header analysis
HTML analysis
Javascript analysis
Sender analysis
Credential Phishing
Evasion
HTML smuggling
Content analysis
File analysis
Header analysis
HTML analysis
Javascript analysis
Sender analysis
Attachment: HTML smuggling with atob and high entropy via calendar invite
2mo ago
Jan 12th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
File analysis
HTML analysis
Javascript analysis
Sender analysis
Credential Phishing
Malware/Ransomware
Evasion
HTML smuggling
Scripting
File analysis
HTML analysis
Javascript analysis
Sender analysis
Page 1 of 2

Rule Name & Severity	Last Updated	Author	Types, Tactics & Capabilities
Link: JavaScript obfuscation with Telegram bot integration	1mo ago Feb 25th, 2026	Sublime Security	Credential Phishing Evasion Scripting Content analysis Javascript analysis URL analysis
Attachment: ICS with embedded Javascript in SVG file	1mo ago Jan 29th, 2026	Sublime Security	Credential Phishing Malware/Ransomware Scripting Evasion File analysis Javascript analysis Sender analysis
Low reputation link to auto-downloaded HTML file with smuggling indicators	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Evasion Free file host Free subdomain host HTML smuggling Impersonation: Brand Open redirect Social engineering Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis
Attachment: HTML attachment with login portal indicators	2mo ago Jan 12th, 2026	@ajpc500	Credential Phishing HTML smuggling Scripting Archive analysis File analysis HTML analysis Javascript analysis Sender analysis
Attachment: HTML file with reference to recipient and suspicious patterns	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing HTML smuggling Scripting Content analysis File analysis HTML analysis Javascript analysis YARA
Attachment: HTML smuggling with atob and high entropy	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis
Attachment: HTML smuggling with auto-downloaded file	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis
Attachment: HTML smuggling with eval and atob	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with base64 encoded JavaScript function	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with excessive line break obfuscation	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling Microsoft sign in	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Free subdomain host HTML smuggling Impersonation: Brand Social engineering Archive analysis Content analysis File analysis Header analysis Javascript analysis Sender analysis URL analysis
Attachment: HTML smuggling with RC4 decryption	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with setTimeout	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with unescape	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis File analysis HTML analysis Javascript analysis
Attachment: File execution via Javascript	2mo ago Jan 12th, 2026	Sublime Security	Malware/Ransomware Evasion Scripting Archive analysis File analysis Javascript analysis Sender analysis
Request for Quote or Purchase (RFQ\|RFP) with HTML smuggling attachment	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Evasion Content analysis File analysis HTML analysis Javascript analysis Natural Language Understanding URL analysis
Attachment: HTML smuggling with eval and atob via calendar invite	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with ROT13	2mo ago Jan 12th, 2026	@Kyle_Parrish_	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis Javascript analysis HTML analysis
Attachment: EML file contains HTML attachment with login portal indicators	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Evasion HTML smuggling Content analysis File analysis Header analysis HTML analysis Javascript analysis Sender analysis
Attachment: HTML smuggling with atob and high entropy via calendar invite	2mo ago Jan 12th, 2026	Sublime Security	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting File analysis HTML analysis Javascript analysis Sender analysis