Sublime Security

Sublime Core Feed
File analysis
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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
ICS Phishing
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: File analysis
File analysis breaks down and inspects file contents, formats, and embedded elements to uncover hidden threats. This method goes beyond basic file attributes, deeply examining the inner structure of files to find potentially malicious content that looks legitimate on the surface.
File analysis helps detect:
Malicious macros in Office documents (Word, Excel, PowerPoint)
Obfuscated scripts hidden in PDFs or other document types
Executable code disguised in non-executable files
Hidden text content using encoding or steganography
Suspicious metadata or file properties suggesting tampering
Blog Posts
Tax season email attacks: AdWind RATs and Tycoon 2FA phishing kits · Blog · Sublime Security
Hiding a $50,000 BEC financial fraud in a fake email thread · Blog · Sublime Security
Talking phish over turkey · Blog · Sublime Security
Abusing Discord to deliver Agent Tesla malware · Blog · Sublime Security
Scripting Vector Grifts: SVG phishing with smuggled JS and adversary in the middle tactics · Blog · Sublime Security
Gotta Catch 'Em All: Detecting PikaBot Delivery Techniques · Blog · Sublime Security
QR Code Phishing: Decoding Hidden Threats · Blog · Sublime Security
Call Me Maybe? The Rise of Callback Phishing Emails · Blog · Sublime Security
Detecting QakBot: WSF attachments, OneNote files, and generic attack surface reduction · Blog · Sublime Security
Attack Types (7):
BEC/Fraud
Callback Phishing
Malware/Ransomware
Credential Phishing
ICS Phishing
Spam
Extortion
Tactics & Techniques (25):
PDF
Social engineering
Encryption
Evasion
Image as content
Free email provider
Free file host
Out of band pivot
Impersonation: Brand
Exploit
QR code
HTML smuggling
Macros
Open redirect
Free subdomain host
ICS Phishing
Lookalike domain
Scripting
Spoofing
Impersonation: VIP
LNK
OneNote
Impersonation: Employee
IPFS
ISO
Rule Name & Severity
Last Updated
Types, Tactics & Capabilities
Stripe invoice abuse
2d ago
Jul 14th, 2026
Sublime Security
BEC/Fraud
Callback Phishing
PDF
File analysis
Header analysis
BEC/Fraud
Callback Phishing
PDF
File analysis
Header analysis
Attachment: PDF with suspicious document view lure
2d ago
Jul 14th, 2026
Sublime Security
Malware/Ransomware
PDF
Social engineering
Content analysis
File analysis
YARA
Malware/Ransomware
PDF
Social engineering
Content analysis
File analysis
YARA
Attachment: Encrypted PDF with credential theft language in EML
3d ago
Jul 13th, 2026
Sublime Security
Credential Phishing
Encryption
Evasion
PDF
Social engineering
Content analysis
Exif analysis
File analysis
Natural Language Understanding
Sender analysis
Credential Phishing
Encryption
Evasion
PDF
Social engineering
Content analysis
Exif analysis
File analysis
Natural Language Understanding
Sender analysis
Attachment: PDF Object Hash associated with a fake invoice and a W-9
14d ago
Jul 2nd, 2026
Sublime Security
BEC/Fraud
PDF
Evasion
File analysis
Threat intelligence
BEC/Fraud
PDF
Evasion
File analysis
Threat intelligence
Attachment: ICS calendar file with suspicious UID domain
14d ago
Jul 2nd, 2026
Sublime Security
ICS Phishing
Credential Phishing
BEC/Fraud
Social engineering
File analysis
Content analysis
ICS Phishing
Credential Phishing
BEC/Fraud
Social engineering
File analysis
Content analysis
Attachment: Romance scam with image lure and advance-fee or suspicious link indicators
15d ago
Jul 1st, 2026
Sublime Security
BEC/Fraud
Spam
Social engineering
Image as content
Free email provider
Free file host
Out of band pivot
Natural Language Understanding
Header analysis
Sender analysis
Content analysis
URL analysis
File analysis
BEC/Fraud
Spam
Social engineering
Image as content
Free email provider
Free file host
Out of band pivot
Natural Language Understanding
Header analysis
Sender analysis
Content analysis
URL analysis
File analysis
Attachment: Suspicious PDF created with headless browser
15d ago
Jul 1st, 2026
Sublime Security
Credential Phishing
Evasion
PDF
Content analysis
Exif analysis
File analysis
Optical Character Recognition
Credential Phishing
Evasion
PDF
Content analysis
Exif analysis
File analysis
Optical Character Recognition
Attachment: PDF with specific W-9 lure
15d ago
Jul 1st, 2026
Sublime Security
BEC/Fraud
PDF
Social engineering
File analysis
YARA
BEC/Fraud
PDF
Social engineering
File analysis
YARA
Attachment: PDF with quote lure
15d ago
Jul 1st, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
PDF
Social engineering
File analysis
YARA
Credential Phishing
Malware/Ransomware
PDF
Social engineering
File analysis
YARA
Attachment: PDF with localhost IP in EXIF title metadata
17d ago
Jun 29th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
PDF
Evasion
Exif analysis
File analysis
Sender analysis
Credential Phishing
Malware/Ransomware
PDF
Evasion
Exif analysis
File analysis
Sender analysis
Attachment: PDF with suspicious internal object reference identifier
17d ago
Jun 29th, 2026
Sublime Security
BEC/Fraud
PDF
Content analysis
File analysis
BEC/Fraud
PDF
Content analysis
File analysis
Attachment: Invoice and W-9 PDFs with suspicious creators
20d ago
Jun 26th, 2026
Sublime Security
BEC/Fraud
PDF
Social engineering
Impersonation: Brand
File analysis
Optical Character Recognition
Exif analysis
Content analysis
BEC/Fraud
PDF
Social engineering
Impersonation: Brand
File analysis
Optical Character Recognition
Exif analysis
Content analysis
Attachment: PDF with W-9 form indicators
20d ago
Jun 26th, 2026
Sublime Security
BEC/Fraud
PDF
Social engineering
Impersonation: Brand
YARA
File analysis
Content analysis
BEC/Fraud
PDF
Social engineering
Impersonation: Brand
YARA
File analysis
Content analysis
Brand impersonation: Proofpoint secure messaging without legitimate indicators
20d ago
Jun 26th, 2026
Sublime Security
Credential Phishing
Impersonation: Brand
Social engineering
Content analysis
File analysis
Header analysis
URL analysis
Credential Phishing
Impersonation: Brand
Social engineering
Content analysis
File analysis
Header analysis
URL analysis
Brand impersonation: Dropbox
20d ago
Jun 26th, 2026
Sublime Security
Credential Phishing
Impersonation: Brand
Social engineering
Content analysis
File analysis
Header analysis
Sender analysis
Credential Phishing
Impersonation: Brand
Social engineering
Content analysis
File analysis
Header analysis
Sender analysis
Attachment: Duplicated header pages in fraudulent multi-page PDF Request for Quotation
21d ago
Jun 25th, 2026
Sublime Security
BEC/Fraud
PDF
Social engineering
Optical Character Recognition
Content analysis
File analysis
BEC/Fraud
PDF
Social engineering
Optical Character Recognition
Content analysis
File analysis
Attachment: DOCX with malicious document template artifacts
21d ago
Jun 25th, 2026
Sublime Security
Credential Phishing
Evasion
Exploit
File analysis
YARA
Credential Phishing
Evasion
Exploit
File analysis
YARA
Brand impersonation: Fake procurement/RFQ PDF from energy and industrial companies
21d ago
Jun 25th, 2026
Sublime Security
BEC/Fraud
Impersonation: Brand
PDF
Social engineering
Image as content
Optical Character Recognition
File analysis
Content analysis
BEC/Fraud
Impersonation: Brand
PDF
Social engineering
Image as content
Optical Character Recognition
File analysis
Content analysis
Attachment: PDF with a suspicious string and single URL
29d ago
Jun 17th, 2026
Sublime Security
Credential Phishing
PDF
Social engineering
Evasion
Content analysis
File analysis
URL analysis
Exif analysis
Credential Phishing
PDF
Social engineering
Evasion
Content analysis
File analysis
URL analysis
Exif analysis
Attachment: PDF Object Hash associated with fake Canada Revenue Agency documents
29d ago
Jun 17th, 2026
Sublime Security
Credential Phishing
Malware/Ransomware
PDF
Evasion
File analysis
Threat intelligence
Credential Phishing
Malware/Ransomware
PDF
Evasion
File analysis
Threat intelligence
Page 1 of 16

Rule Name & Severity	Last Updated	Author	Types, Tactics & Capabilities
Stripe invoice abuse	2d ago Jul 14th, 2026	Sublime Security	BEC/Fraud Callback Phishing PDF File analysis Header analysis
Attachment: PDF with suspicious document view lure	2d ago Jul 14th, 2026	Sublime Security	Malware/Ransomware PDF Social engineering Content analysis File analysis YARA
Attachment: Encrypted PDF with credential theft language in EML	3d ago Jul 13th, 2026	Sublime Security	Credential Phishing Encryption Evasion PDF Social engineering Content analysis Exif analysis File analysis Natural Language Understanding Sender analysis
Attachment: PDF Object Hash associated with a fake invoice and a W-9	14d ago Jul 2nd, 2026	Sublime Security	BEC/Fraud PDF Evasion File analysis Threat intelligence
Attachment: ICS calendar file with suspicious UID domain	14d ago Jul 2nd, 2026	Sublime Security	ICS Phishing Credential Phishing BEC/Fraud Social engineering File analysis Content analysis
Attachment: Romance scam with image lure and advance-fee or suspicious link indicators	15d ago Jul 1st, 2026	Sublime Security	BEC/Fraud Spam Social engineering Image as content Free email provider Free file host Out of band pivot Natural Language Understanding Header analysis Sender analysis Content analysis URL analysis File analysis
Attachment: Suspicious PDF created with headless browser	15d ago Jul 1st, 2026	Sublime Security	Credential Phishing Evasion PDF Content analysis Exif analysis File analysis Optical Character Recognition
Attachment: PDF with specific W-9 lure	15d ago Jul 1st, 2026	Sublime Security	BEC/Fraud PDF Social engineering File analysis YARA
Attachment: PDF with quote lure	15d ago Jul 1st, 2026	Sublime Security	Credential Phishing Malware/Ransomware PDF Social engineering File analysis YARA
Attachment: PDF with localhost IP in EXIF title metadata	17d ago Jun 29th, 2026	Sublime Security	Credential Phishing Malware/Ransomware PDF Evasion Exif analysis File analysis Sender analysis
Attachment: PDF with suspicious internal object reference identifier	17d ago Jun 29th, 2026	Sublime Security	BEC/Fraud PDF Content analysis File analysis
Attachment: Invoice and W-9 PDFs with suspicious creators	20d ago Jun 26th, 2026	Sublime Security	BEC/Fraud PDF Social engineering Impersonation: Brand File analysis Optical Character Recognition Exif analysis Content analysis
Attachment: PDF with W-9 form indicators	20d ago Jun 26th, 2026	Sublime Security	BEC/Fraud PDF Social engineering Impersonation: Brand YARA File analysis Content analysis
Brand impersonation: Proofpoint secure messaging without legitimate indicators	20d ago Jun 26th, 2026	Sublime Security	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis URL analysis
Brand impersonation: Dropbox	20d ago Jun 26th, 2026	Sublime Security	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis Sender analysis
Attachment: Duplicated header pages in fraudulent multi-page PDF Request for Quotation	21d ago Jun 25th, 2026	Sublime Security	BEC/Fraud PDF Social engineering Optical Character Recognition Content analysis File analysis
Attachment: DOCX with malicious document template artifacts	21d ago Jun 25th, 2026	Sublime Security	Credential Phishing Evasion Exploit File analysis YARA
Brand impersonation: Fake procurement/RFQ PDF from energy and industrial companies	21d ago Jun 25th, 2026	Sublime Security	BEC/Fraud Impersonation: Brand PDF Social engineering Image as content Optical Character Recognition File analysis Content analysis
Attachment: PDF with a suspicious string and single URL	29d ago Jun 17th, 2026	Sublime Security	Credential Phishing PDF Social engineering Evasion Content analysis File analysis URL analysis Exif analysis
Attachment: PDF Object Hash associated with fake Canada Revenue Agency documents	29d ago Jun 17th, 2026	Sublime Security	Credential Phishing Malware/Ransomware PDF Evasion File analysis Threat intelligence