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 Sep 9th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Attachment: ICS file with links to newly registered domains	Sublime Security	4mo ago Apr 20th, 2026	Credential Phishing Social engineering File analysis URL analysis Whois
Attachment: ICS file with meeting prefix	Sublime Security	4mo ago Apr 28th, 2026	BEC/Fraud Credential Phishing ICS Phishing Social engineering File analysis Header analysis
Attachment: ICS invite meeting lure	Sublime Security	14d ago Aug 27th, 2026	ICS Phishing Credential Phishing Social engineering Impersonation: Brand Spoofing Open redirect Content analysis URL analysis Header analysis Sender analysis File analysis
Attachment: ICS Link With Valueless Base64 Query Parameter	Sublime Security	6d ago Sep 4th, 2026	ICS Phishing Credential Phishing Evasion Social engineering File analysis URL analysis Header analysis
Attachment: ICS voicemail lure with suspicious link	Sublime Security	6h ago Sep 9th, 2026	ICS Phishing Credential Phishing Social engineering Free file host Evasion File analysis Content analysis URL analysis Whois Header analysis
Attachment: ICS with employee policy review lure	Sublime Security	4mo ago Apr 28th, 2026	Credential Phishing BEC/Fraud Evasion ICS Phishing Social engineering File analysis Content analysis
Attachment: Identity Confirmation With Document Unlock Code	Sublime Security	1mo ago Jul 28th, 2026	Credential Phishing Social engineering Encryption PDF Content analysis
Attachment: Image-only docx/pptx callback phishing	Sublime Security	20d ago Aug 21st, 2026	Callback Phishing Image as content Impersonation: Brand Social engineering File analysis Optical Character Recognition Content analysis
Attachment: Invoice and W-9 PDFs with suspicious creators	Sublime Security	16d ago Aug 25th, 2026	BEC/Fraud PDF Social engineering Impersonation: Brand File analysis Optical Character Recognition Exif analysis Content analysis
Attachment: Legal themed message or PDF with suspicious indicators	Sublime Security	5mo ago Apr 3rd, 2026	Credential Phishing Extortion BEC/Fraud Evasion PDF Social engineering Content analysis File analysis Natural Language Understanding Optical Character Recognition URL analysis Whois Header analysis Exif analysis
Attachment: Link to Doubleclick.net open redirect	Sublime Security	4mo 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 Jul 27th, 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	3mo 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	1mo 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	8mo 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	8mo 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	7mo 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	5mo 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	5mo ago Mar 18th, 2026	BEC/Fraud Credential Phishing PDF Social engineering File analysis YARA
Attachment: PDF credential phishing via wkhtmltopdf/Qt with suspicious link	Sublime Security	8d ago Sep 2nd, 2026	Credential Phishing PDF Open redirect Social engineering Exif analysis Optical Character Recognition Natural Language Understanding URL analysis File analysis
Attachment: PDF file with link to fake Bitcoin exchange	Sublime Security	8mo 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	2mo ago Jun 16th, 2026	BEC/Fraud PDF Social engineering File analysis Content analysis
Attachment: PDF Grant Payment lure with embedded link	Sublime Security	15d ago Aug 26th, 2026	Credential Phishing PDF Social engineering File analysis URL analysis Content analysis
Attachment: PDF proposal with credential theft indicators	Sublime Security	17d ago Aug 24th, 2026	Credential Phishing PDF Social engineering Evasion File analysis Natural Language Understanding Optical Character Recognition URL analysis
Attachment: PDF RFP lure	Sublime Security	7d ago Sep 3rd, 2026	Credential Phishing BEC/Fraud PDF Social engineering YARA File analysis
Attachment: PDF templated investment lure	Sublime Security	22d ago Aug 19th, 2026	Malware/Ransomware Credential Phishing PDF Social engineering YARA File analysis
Attachment: PDF with a suspicious string and single URL	Sublime Security	22d ago Aug 19th, 2026	Credential Phishing PDF Social engineering Evasion Content analysis File analysis URL analysis Exif analysis
Attachment: PDF with bolded passcode	Sublime Security	2d ago Sep 8th, 2026	Credential Phishing PDF Evasion Social engineering HTML analysis Content analysis File analysis
Attachment: PDF with credential theft language and invalid reply-to domain	Sublime Security	5mo 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	8mo 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 dub.sh shortened link	Sublime Security	5h ago Sep 9th, 2026	Credential Phishing BEC/Fraud PDF Social engineering Evasion File analysis URL analysis
Attachment: PDF with embedded box-lure and javascript	Sublime Security	22d ago Aug 19th, 2026	Credential Phishing Malware/Ransomware PDF Social engineering Evasion File analysis YARA
Attachment: PDF with fake invoice using suspicious font sizing	Sublime Security	3mo 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	10mo 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	6mo 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	9mo 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	3mo 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	2mo ago Jul 1st, 2026	Credential Phishing Malware/Ransomware PDF Social engineering File analysis YARA
Attachment: PDF with recipient email in link	Sublime Security	3mo 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	1mo 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	2mo ago Jul 1st, 2026	BEC/Fraud PDF Social engineering File analysis YARA
Attachment: PDF with suspicious document view lure	Sublime Security	1mo 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	23d ago Aug 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	4mo ago Apr 23rd, 2026	Credential Phishing Malware/Ransomware PDF Social engineering Evasion File analysis YARA
Attachment: PDF with View RFP Document lure with external link	Sublime Security	14d ago Aug 27th, 2026	Credential Phishing PDF Social engineering File analysis URL analysis Content analysis
Attachment: PDF with W-9 form indicators	Sublime Security	2mo 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	4mo 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	1mo ago Jul 27th, 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	6mo 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	6mo ago Feb 21st, 2026	Credential Phishing QR code Evasion Social engineering Archive analysis File analysis QR code analysis URL analysis

764 Rules

Page 2 of 16