Sublime Core Feed

This repo contains open-source Rules for Sublime, a free and open platform for detecting and preventing email attacks like BEC, malware, and credential phishing.

Sublime Security

Last updated Jul 25th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Attachment: Link to Doubleclick.net open redirect	Sublime Security	2mo ago Apr 29th, 2026	BEC/Fraud Credential Phishing Evasion Open redirect Social engineering Content analysis File analysis URL analysis
Attachment: Microsoft 365 credential phishing	Sublime Security	1mo ago Jun 5th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis Optical Character Recognition Sender analysis
Attachment: Microsoft impersonation via PDF with link and suspicious language	Sublime Security	2mo ago May 14th, 2026	Credential Phishing Malware/Ransomware Image as content Impersonation: Brand PDF Scripting Social engineering Computer Vision File analysis Header analysis Natural Language Understanding Sender analysis
Attachment: Microsoft SharePoint Impersonation via images in macro-enabled attachment	Sublime Security	10d ago Jul 16th, 2026	Credential Phishing Impersonation: Brand Macros Image as content Social engineering File analysis Macro analysis Optical Character Recognition
Attachment: Office file contains OLE relationship to credential phishing page	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering File analysis HTML analysis Natural Language Understanding OLE analysis URL analysis
Attachment: Office file with credential phishing URLs	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering File analysis URL analysis Archive analysis Content analysis
Attachment: Office file with document sharing and browser instruction lures	Sublime Security	5mo ago Jan 29th, 2026	Credential Phishing Social engineering Evasion Archive analysis File analysis Macro analysis Optical Character Recognition Content analysis
Attachment: PDF bid/proposal lure with credential theft indicators	Sublime Security	4mo ago Mar 27th, 2026	BEC/Fraud Credential Phishing PDF Social engineering Free file host Free subdomain host File analysis Content analysis Optical Character Recognition Natural Language Understanding URL analysis Exif analysis
Attachment: PDF contains W9 or invoice YARA signatures	Sublime Security	4mo ago Mar 18th, 2026	BEC/Fraud Credential Phishing PDF Social engineering File analysis YARA
Attachment: PDF file with link to fake Bitcoin exchange	Sublime Security	6mo ago Jan 12th, 2026	BEC/Fraud Free email provider Impersonation: Brand PDF Social engineering Exif analysis File analysis Sender analysis URL analysis
Attachment: PDF file with recipient domain and ATT eCheckRun pattern	Sublime Security	1mo ago Jun 16th, 2026	BEC/Fraud PDF Social engineering File analysis Content analysis
Attachment: PDF proposal with credential theft indicators	Sublime Security	4mo ago Mar 17th, 2026	Credential Phishing PDF Social engineering Evasion File analysis Natural Language Understanding Optical Character Recognition URL analysis
Attachment: PDF with a suspicious string and single URL	Sublime Security	1mo ago Jun 17th, 2026	Credential Phishing PDF Social engineering Evasion Content analysis File analysis URL analysis Exif analysis
Attachment: PDF with credential theft language and invalid reply-to domain	Sublime Security	3mo ago Apr 10th, 2026	Credential Phishing PDF Social engineering Spoofing File analysis Header analysis Natural Language Understanding Content analysis
Attachment: PDF with credential theft language and link to a free subdomain (unsolicited)	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Free subdomain host PDF Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis
Attachment: PDF with fake invoice using suspicious font sizing	Sublime Security	1mo ago Jun 9th, 2026	BEC/Fraud Callback Phishing PDF Social engineering File analysis YARA Content analysis
Attachment: PDF with Microsoft Purview message impersonation	Sublime Security	8mo ago Nov 10th, 2025	Credential Phishing Impersonation: Brand PDF Social engineering File analysis Natural Language Understanding Content analysis
Attachment: PDF with multistage landing - ClickUp abuse	Sublime Security	4mo ago Feb 27th, 2026	Credential Phishing Evasion Free file host Free subdomain host PDF Social engineering File analysis URL analysis Whois
Attachment: PDF with personal Microsoft OneNote URL	Sublime Security	7mo ago Dec 4th, 2025	Credential Phishing PDF Social engineering File analysis Content analysis
Attachment: PDF with QR code containing recipient-specific credential theft content	Sublime Security	1mo ago Jun 10th, 2026	Credential Phishing PDF QR code Social engineering File analysis Natural Language Understanding QR code analysis Content analysis
Attachment: PDF with quote lure	Sublime Security	25d ago Jul 1st, 2026	Credential Phishing Malware/Ransomware PDF Social engineering File analysis YARA
Attachment: PDF with recipient email in link	Sublime Security	1mo ago Jun 10th, 2026	Credential Phishing PDF QR code Encryption Social engineering File analysis QR code analysis URL analysis
Attachment: PDF with secure document acknowledgment prompt	Sublime Security	9d ago Jul 17th, 2026	Credential Phishing Evasion PDF Social engineering Image as content Impersonation: Brand Content analysis File analysis YARA
Attachment: PDF with specific W-9 lure	Sublime Security	25d ago Jul 1st, 2026	BEC/Fraud PDF Social engineering File analysis YARA
Attachment: PDF with suspicious document view lure	Sublime Security	12d ago Jul 14th, 2026	Malware/Ransomware PDF Social engineering Content analysis File analysis YARA
Attachment: PDF with suspicious link and action-oriented language	Sublime Security	2mo ago May 18th, 2026	Credential Phishing PDF Social engineering Evasion File analysis URL analysis Content analysis URL screenshot
Attachment: PDF with suspicious view document characteristics	Sublime Security	3mo ago Apr 23rd, 2026	Credential Phishing Malware/Ransomware PDF Social engineering Evasion File analysis YARA
Attachment: PDF with W-9 form indicators	Sublime Security	30d ago Jun 26th, 2026	BEC/Fraud PDF Social engineering Impersonation: Brand YARA File analysis Content analysis
Attachment: QR code link with base64-encoded recipient address	Sublime Security	2mo ago Apr 29th, 2026	Credential Phishing QR code Image as content Social engineering Evasion PDF Macros Computer Vision File analysis Natural Language Understanding QR code analysis Sender analysis
Attachment: QR code with credential phishing indicators	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing QR code Social engineering Computer Vision Header analysis Natural Language Understanding QR code analysis Sender analysis URL analysis URL screenshot
Attachment: QR code with recipient targeting and special characters	Sublime Security	5mo ago Feb 21st, 2026	Credential Phishing QR code Social engineering Evasion File analysis QR code analysis URL analysis Computer Vision
Attachment: QR code with suspicious URL patterns in EML file	Sublime Security	5mo ago Feb 21st, 2026	Credential Phishing QR code Evasion Social engineering Archive analysis File analysis QR code analysis URL analysis
Attachment: RFC822 containing suspicious file sharing language with links from untrusted sender	Sublime Security	8mo ago Nov 4th, 2025	Credential Phishing Evasion Social engineering File analysis Header analysis Natural Language Understanding Sender analysis
Attachment: RFP/RFQ impersonating government entities	Sublime Security	2y ago Jan 30th, 2024	BEC/Fraud Impersonation: Brand PDF Social engineering Content analysis File analysis Natural Language Understanding Optical Character Recognition Sender analysis
Attachment: Romance scam with image lure and advance-fee or suspicious link indicators	Sublime Security	25d ago Jul 1st, 2026	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: Self-sender PDF with minimal content and view prompt	Sublime Security	5mo ago Feb 12th, 2026	Credential Phishing Malware/Ransomware PDF Social engineering Evasion Content analysis File analysis Sender analysis
Attachment: Small text file with link containing recipient email address	Sublime Security	2mo ago May 14th, 2026	Credential Phishing Evasion Social engineering File analysis URL analysis
Attachment: Soda PDF producer with encryption themes	Sublime Security	11mo ago Aug 5th, 2025	Credential Phishing PDF Social engineering File analysis Optical Character Recognition
Attachment: Suspicious employee policy update document lure	Sublime Security	7mo ago Dec 26th, 2025	Credential Phishing PDF Social engineering Evasion Content analysis File analysis Sender analysis
Attachment: USDA bid invitation impersonation	Sublime Security	11mo ago Aug 5th, 2025	BEC/Fraud Impersonation: Brand PDF Macros Social engineering Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Attachment with VBA macros from employee impersonation (unsolicited)	Sublime Security	6mo ago Jan 12th, 2026	Malware/Ransomware Impersonation: Employee Macros Social engineering Archive analysis File analysis Macro analysis Sender analysis
BEC: Employee impersonation with subject manipulation	Sublime Security	6mo ago Jan 16th, 2026	BEC/Fraud Impersonation: Employee Social engineering Content analysis Natural Language Understanding Sender analysis
BEC: Executive coaching vendor impersonation	Sublime Security	25d ago Jul 1st, 2026	BEC/Fraud Impersonation: Brand Social engineering Content analysis HTML analysis Natural Language Understanding
BEC: Financial fraud from newly registered sender domain	Sublime Security	1mo ago Jun 25th, 2026	BEC/Fraud Social engineering Spoofing Natural Language Understanding Whois Content analysis Sender analysis Header analysis
BEC/Fraud: Fake investment outreach from suspicious TLD	Sublime Security	1mo ago Jun 15th, 2026	BEC/Fraud Social engineering Header analysis Sender analysis Content analysis
BEC/Fraud: Generic scam attempt to undisclosed recipients	Sublime Security	2mo ago Apr 30th, 2026	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
BEC/Fraud: Penpal scam	Sublime Security	1mo ago Jun 5th, 2026	BEC/Fraud Free email provider Social engineering Content analysis Header analysis Sender analysis
BEC/Fraud: Reply-chain manipulation with urgent keywords and self-reply	Sublime Security	4mo ago Mar 11th, 2026	BEC/Fraud Social engineering Evasion Content analysis Header analysis Sender analysis
BEC/Fraud: Romance scam	Sublime Security	4mo ago Mar 9th, 2026	BEC/Fraud Free email provider Social engineering Content analysis Header analysis
BEC/Fraud: Student loan callback phishing	Sublime Security	2mo ago May 4th, 2026	BEC/Fraud Free email provider Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis

678 Rules

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