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 Oct 23rd, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Attachment: PDF file with link to fake Bitcoin exchange	Sublime Security	9mo 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 low reputation links to suspicious filetypes (unsolicited)	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis File analysis Sender analysis
Attachment: PDF file with low reputation link to ZIP file (unsolicited)	Michael Tingle	9mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis File analysis Natural Language Understanding Sender analysis URL analysis
Attachment: PDF with credential theft language and link to a free subdomain (unsolicited)	Sublime Security	9mo 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 localhost IP in EXIF title metadata	Sublime Security	3mo ago Jun 29th, 2026	Credential Phishing Malware/Ransomware PDF Evasion Exif analysis File analysis Sender analysis
Attachment: PDF with self-service platform links with self sender or blank recipients	Sublime Security	4mo ago Jun 10th, 2026	BEC/Fraud Credential Phishing PDF Evasion Free file host File analysis Exif analysis URL analysis Sender analysis
Attachment: Personalized fake order/invoice file naming pattern	Sublime Security	27d ago Sep 28th, 2026	Callback Phishing Social engineering Free email provider Impersonation: Brand File analysis Content analysis Sender analysis
Attachment: QR code link with encoded recipient address	Sublime Security	1mo ago Sep 22nd, 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 Sep 23rd, 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 userinfo portion	Sublime Security	27d ago Sep 28th, 2026	Credential Phishing Malware/Ransomware Evasion Image as content PDF QR code QR code analysis File analysis Sender analysis
Attachment: RFC822 containing suspicious file sharing language with links from untrusted sender	Sublime Security	26d ago Sep 29th, 2026	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: Risk assessment PDF with inline image	Sublime Security	2mo ago Aug 25th, 2026	Malware/Ransomware Spam Image as content PDF Social engineering File analysis HTML analysis Header analysis Sender analysis
Attachment: Romance scam with image lure and advance-fee or suspicious link indicators	Sublime Security	3mo 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: RTF file with suspicious link	Sublime Security	1y ago Jul 23rd, 2025	Credential Phishing Evasion Archive analysis File analysis Sender analysis URL analysis
Attachment: RTF with link to free-hosted Cloudflare Pages	Sublime Security	2mo ago Aug 13th, 2026	Credential Phishing Free subdomain host File analysis URL analysis HTML analysis Sender analysis
Attachment: Self-sender PDF with minimal content and view prompt	Sublime Security	8mo ago Feb 12th, 2026	Credential Phishing Malware/Ransomware PDF Social engineering Evasion Content analysis File analysis Sender analysis
Attachment soliciting user to enable macros	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Macros Archive analysis File analysis Macro analysis Optical Character Recognition Sender analysis
Attachment: Suspicious employee policy update document lure	Sublime Security	10mo ago Dec 26th, 2025	Credential Phishing PDF Social engineering Evasion Content analysis File analysis Sender analysis
Attachment: SVG files with evasion elements	Sublime Security	5mo ago May 8th, 2026	Malware/Ransomware Credential Phishing QR code Image as content Evasion File analysis XML analysis QR code analysis Sender analysis
Attachment: USDA bid invitation impersonation	Sublime Security	1y 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 auto-executing macro (unsolicited)	Sublime Security	4mo ago Jun 5th, 2026	Malware/Ransomware Macros Archive analysis Header analysis File analysis Macro analysis OLE analysis Sender analysis
Attachment with auto-opening VBA macro (unsolicited)	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Macros Archive analysis File analysis Macro analysis Sender analysis
Attachment with encrypted zip (unsolicited)	Sublime Security	1y ago Jul 16th, 2025	Malware/Ransomware Evasion Encryption Archive analysis File analysis Sender analysis
Attachment with high risk VBA macro (unsolicited)	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Macros File analysis Macro analysis OLE analysis Sender analysis
Attachment with suspicious author (unsolicited)	Sublime Security	1y ago Jul 16th, 2025	Malware/Ransomware File analysis Sender analysis
Attachment with VBA macros from employee impersonation (unsolicited)	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Impersonation: Employee Macros Social engineering Archive analysis File analysis Macro analysis Sender analysis
Attachment: Word document with hyperlink and fraud language	Sublime Security	1mo ago Sep 4th, 2026	Credential Phishing BEC/Fraud Free email provider Social engineering Evasion File analysis XML analysis HTML analysis URL analysis Natural Language Understanding Sender analysis
BEC: Employee impersonation with subject manipulation	Sublime Security	9mo ago Jan 16th, 2026	BEC/Fraud Impersonation: Employee Social engineering Content analysis Natural Language Understanding Sender analysis
BEC: Financial fraud from newly registered sender domain	Sublime Security	4mo 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	3d ago Oct 22nd, 2026	BEC/Fraud Social engineering Header analysis Sender analysis Content analysis Natural Language Understanding
BEC/Fraud: Generic scam attempt to undisclosed recipients	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
BEC/Fraud: Penpal scam	Sublime Security	1mo ago Sep 23rd, 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	7mo ago Mar 11th, 2026	BEC/Fraud Social engineering Evasion Content analysis Header analysis Sender analysis
BEC/Fraud: Scam lure with freemail pivot	Sublime Security	5mo ago Apr 30th, 2026	BEC/Fraud Free email provider Out of band pivot Content analysis Header analysis Sender analysis
BEC/Fraud: Self-addressed reply with unrelated link in ongoing thread	Sublime Security	1mo ago Aug 26th, 2026	BEC/Fraud Credential Phishing Social engineering Out of band pivot URL analysis Header analysis Sender analysis Content analysis
BEC/Fraud: Student loan callback phishing	Sublime Security	5mo ago May 4th, 2026	BEC/Fraud Free email provider Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis
BEC/Fraud: Urgent language and suspicious sending/infrastructure patterns	Sublime Security	6mo ago Apr 17th, 2026	BEC/Fraud Callback Phishing Spam Impersonation: Brand Social engineering Free email provider Content analysis Header analysis Sender analysis Whois
BEC: Tax document request	Sublime Security	2mo ago Aug 6th, 2026	BEC/Fraud Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis
BEC with unusual reply-to or return-path mismatch	Sublime Security	4mo ago Jun 5th, 2026	BEC/Fraud Evasion Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Benefits enrollment impersonation	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Impersonation: Employee Out of band pivot Social engineering Content analysis Header analysis Sender analysis
Body: AI-generated invoice template artifacts	Sublime Security	2mo ago Aug 22nd, 2026	Credential Phishing BEC/Fraud Social engineering Spoofing Natural Language Understanding HTML analysis Header analysis Sender analysis
Body: Embedded email headers indicative of thread hijacking/abuse	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing BEC/Fraud Spam Evasion Social engineering Spoofing Content analysis Header analysis Sender analysis
Body: Fake secure email portal with HTML obfuscation	Sublime Security	4mo ago Jun 18th, 2026	Credential Phishing Evasion Social engineering Spoofing Content analysis HTML analysis URL analysis Sender analysis Threat intelligence
Body HTML: Recipient SLD in HTML class	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Social engineering HTML analysis Header analysis Sender analysis
Brand impersonation: AARP	Sublime Security	1mo ago Sep 4th, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Brand impersonation: Aconex	Sublime Security	18d ago Oct 7th, 2026	Credential Phishing Impersonation: Brand Social engineering Spoofing Natural Language Understanding Content analysis Header analysis Sender analysis
Brand impersonation: Adobe (QR code)	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand PDF QR code Computer Vision Header analysis QR code analysis Sender analysis
Brand impersonation: Adobe Sign with suspicious indicators	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis HTML analysis Sender analysis
Brand impersonation: Adobe with suspicious language and link	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Sender analysis

786 Rules

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