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

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Attachment: PDF with link to zip containing a wsf file	Sublime Security	8mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis Content analysis File analysis URL 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 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 self-service platform links with self sender or blank recipients	Sublime Security	3mo ago Jun 10th, 2026	BEC/Fraud Credential Phishing PDF Evasion Free file host File analysis Exif analysis URL analysis Sender analysis
Attachment: PDF with suspicious language and redirect to suspicious file type	Sublime Security	8mo ago Jan 12th, 2026	Malware/Ransomware Credential Phishing Evasion PDF File analysis Natural Language Understanding Optical Character Recognition URL analysis
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 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: 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 encoded recipient targeting and redirect indicators	Sublime Security	7mo ago Jan 30th, 2026	Credential Phishing QR code Evasion Image as content Open redirect Archive analysis File analysis QR code analysis URL analysis
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
Attachment: Romance scam with image lure and advance-fee or suspicious link indicators	Sublime Security	2mo 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	28d ago Aug 13th, 2026	Credential Phishing Free subdomain host File analysis URL analysis HTML analysis Sender analysis
Attachment: Single-page PDF with S3-hosted HTML link	Sublime Security	1mo ago Jul 16th, 2026	Credential Phishing PDF Free file host Evasion File analysis Exif analysis URL analysis
Attachment: Small text file with link containing recipient email address	Sublime Security	3mo ago May 14th, 2026	Credential Phishing Evasion Social engineering File analysis URL analysis
Attachment: Word document with hyperlink and fraud language	Sublime Security	6d 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/Fraud: Self-addressed reply with unrelated link in ongoing thread	Sublime Security	15d ago Aug 26th, 2026	BEC/Fraud Credential Phishing Social engineering Out of band pivot URL analysis Header analysis Sender analysis Content analysis
Body: CSS clamp() font obfuscation	Sublime Security	9d ago Sep 1st, 2026	Credential Phishing Evasion Social engineering HTML analysis URL analysis Content analysis
Body: Fake secure email portal with HTML obfuscation	Sublime Security	2mo ago Jun 18th, 2026	Credential Phishing Evasion Social engineering Spoofing Content analysis HTML analysis URL analysis Sender analysis Threat intelligence
Brand impersonation: AliExpress	Sublime Security	1y ago Aug 5th, 2025	Callback Phishing Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis URL analysis
Brand impersonation: Bids & Tenders	Sublime Security	1mo ago Jul 21st, 2026	Credential Phishing Impersonation: Brand Spoofing Social engineering Sender analysis URL analysis Content analysis
Brand impersonation: Chase bank with credential phishing indicators	Sublime Security	8mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Cloud services with credential theft intent	Sublime Security	7d ago Sep 3rd, 2026	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Coinbase with suspicious links	Sublime Security	11mo ago Sep 22nd, 2025	Credential Phishing Evasion Free subdomain host Image as content Impersonation: Brand Computer Vision Content analysis File analysis URL analysis
Brand impersonation: DocuSign	Sublime Security	3mo ago Jun 1st, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Spoofing Header analysis Sender analysis URL analysis
Brand impersonation: DocuSign PDF attachment with suspicious link	Sublime Security	10mo ago Oct 22nd, 2025	Credential Phishing Impersonation: Brand PDF Social engineering File analysis Natural Language Understanding Optical Character Recognition URL analysis
Brand impersonation: Fake DocuSign HTML table not linking to DocuSign domains	Sublime Security	3mo ago Jun 5th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis HTML analysis Header analysis Sender analysis URL analysis
Brand impersonation: Fake Fax	Sublime Security	2mo ago Jun 17th, 2026	Credential Phishing Impersonation: Brand Image as content Free file host Free subdomain host Social engineering Computer Vision Content analysis Optical Character Recognition Sender analysis URL analysis
Brand impersonation: Figma with malicious document access overlay	Sublime Security	3mo ago May 27th, 2026	Credential Phishing Impersonation: Brand Social engineering Image as content Sender analysis HTML analysis URL screenshot Optical Character Recognition URL analysis
Brand Impersonation: Gemini Trust Company	Sublime Security	8mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis URL analysis Sender analysis Header analysis
Brand impersonation: Google Careers	Sublime Security	10mo ago Nov 12th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis URL analysis
Brand impersonation: Google Drive fake file share	Sublime Security	2mo ago Jun 26th, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Social engineering Content analysis Header analysis URL analysis Computer Vision
Brand impersonation: Google fake sign-in warning	Sublime Security	8mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Optical Character Recognition Sender analysis URL analysis
Brand impersonation: Google Meet with malicious link	Sublime Security	1mo ago Aug 7th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis URL analysis
Brand impersonation: Google Workspace alert notification	Sublime Security	9mo ago Dec 2nd, 2025	Credential Phishing Impersonation: Brand Social engineering Lookalike domain Header analysis Content analysis Sender analysis URL analysis
Brand impersonation: Government / Tax Authority document lure	Sublime Security	1mo ago Jul 14th, 2026	Credential Phishing Impersonation: Brand Free subdomain host Social engineering Lookalike domain Sender analysis URL analysis Natural Language Understanding Content analysis Threat intelligence
Brand impersonation: LastPass	Sublime Security	6mo ago Mar 5th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis Header analysis
Brand impersonation: Microsoft logo image linking to free file host	Sublime Security	20d ago Aug 21st, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Image as content Free file host Social engineering Computer Vision Optical Character Recognition Exif analysis HTML analysis URL analysis
Brand impersonation: Microsoft logo or suspicious language with open redirect	Sublime Security	3mo ago Jun 5th, 2026	BEC/Fraud Impersonation: Brand Open redirect Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Microsoft Planner with suspicious link	Sublime Security	29d ago Aug 12th, 2026	Credential Phishing Evasion Image as content Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Microsoft Teams invitation	Sublime Security	2mo ago Jun 26th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis HTML analysis URL analysis
Brand impersonation: Microsoft with low reputation links	Sublime Security	14d ago Aug 27th, 2026	Credential Phishing Free file host Image as content Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis
Brand impersonation: Navan	Sublime Security	7mo ago Feb 9th, 2026	Credential Phishing Impersonation: Brand Social engineering Spoofing Sender analysis Natural Language Understanding URL analysis Content analysis
Brand impersonation: Paperless Post	Sublime Security	10d ago Aug 31st, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Content analysis Header analysis HTML analysis Sender analysis URL analysis
Brand impersonation: Proofpoint secure messaging without legitimate indicators	Sublime Security	2mo ago Jun 26th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis URL analysis
Brand impersonation: Purdue ePlanroom with suspicious links	Sublime Security	9mo ago Dec 2nd, 2025	Credential Phishing BEC/Fraud Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
Brand impersonation: Robinhood	Sublime Security	14d ago Aug 27th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis URL analysis
Brand impersonation: Sharepoint fake file share	Sublime Security	8mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Social engineering Content analysis Header analysis URL analysis Computer Vision
Brand impersonation: SharePoint PDF attachment with credential theft language	Sublime Security	4mo ago May 4th, 2026	Credential Phishing Impersonation: Brand Social engineering PDF Evasion Computer Vision File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis Header analysis Whois

556 Rules

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