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
Adobe branded PDF file linking to a password-protected file from untrusted sender	Sublime Security	4mo ago Apr 29th, 2026	Malware/Ransomware Encryption Evasion Impersonation: Brand PDF Archive analysis File analysis Natural Language Understanding Optical Character Recognition
Attachment: Adobe image lure in body or attachment with suspicious link	Sublime Security	3mo ago Jun 5th, 2026	Credential Phishing Image as content Impersonation: Brand Content analysis Computer Vision Optical Character Recognition Sender analysis URL analysis
Attachment: Callback phishing solicitation via image file	@vector_sec	8mo ago Jan 12th, 2026	Callback Phishing Evasion Free email provider Out of band pivot Social engineering Image as content Content analysis Optical Character Recognition Sender analysis URL analysis Computer Vision
Attachment: Callback phishing solicitation via pdf file	Sublime Security	1mo ago Jul 27th, 2026	Callback Phishing Evasion Free email provider Out of band pivot PDF Social engineering Exif analysis File analysis Optical Character Recognition Sender analysis
Attachment: Compensation review lure with QR code	Sublime Security	4mo ago Apr 14th, 2026	Credential Phishing PDF QR code Social engineering File analysis Optical Character Recognition QR code analysis Natural Language Understanding Sender analysis Header analysis
Attachment: Compensation-themed DOCX with QR code credential theft	Sublime Security	3mo ago May 29th, 2026	Credential Phishing QR code Social engineering Impersonation: Brand File analysis Optical Character Recognition QR code analysis Natural Language Understanding Exif analysis Content analysis
Attachment: Dropbox image lure with no Dropbox domains in links	Sublime Security	1y ago Jul 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis Optical Character Recognition Sender analysis
Attachment: Duplicated header pages in fraudulent multi-page PDF Request for Quotation	Sublime Security	2mo ago Jun 25th, 2026	BEC/Fraud PDF Social engineering Optical Character Recognition Content analysis File analysis
Attachment: EML with link to credential phishing page	Sublime Security	1mo ago Jul 27th, 2026	Credential Phishing Evasion Free file host Free subdomain host Social engineering Computer Vision Content analysis File analysis Header analysis HTML analysis Natural Language Understanding Optical Character Recognition URL analysis URL screenshot
Attachment: Fake attachment image lure	Sublime Security	3mo ago Jun 5th, 2026	Credential Phishing Malware/Ransomware Evasion Image as content Social engineering File analysis Natural Language Understanding Optical Character Recognition
Attachment: Fake lawyer & sports agent identities	Sublime Security	7mo ago Jan 26th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Exif analysis File analysis Optical Character Recognition
Attachment: Fake research internship offer	Sublime Security	9d ago Sep 1st, 2026	BEC/Fraud Spam PDF Social engineering Out of band pivot Free email provider Optical Character Recognition Content analysis File analysis
Attachment: Fake scan-to-email	Sublime Security	11mo ago Sep 22nd, 2025	Credential Phishing Free file host Image as content PDF Social engineering Content analysis File analysis Natural Language Understanding Optical Character Recognition Sender analysis
Attachment: Fake voicemail via PDF	Sublime Security	4mo ago Apr 30th, 2026	Credential Phishing PDF QR code Social engineering Computer Vision Content analysis File analysis Optical Character Recognition QR code analysis URL analysis
Attachment: Fictitious invoice using LinkedIn's address	Sublime Security	1mo ago Jul 29th, 2026	BEC/Fraud PDF Social engineering File analysis Optical Character Recognition Natural Language Understanding Content analysis Exif 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: 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 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 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 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 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 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 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: 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: Soda PDF producer with encryption themes	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing PDF Social engineering File analysis Optical Character Recognition
Attachment soliciting user to enable macros	Sublime Security	8mo ago Jan 12th, 2026	Malware/Ransomware Macros Archive analysis File analysis Macro analysis Optical Character Recognition Sender analysis
Attachment: Suspicious PDF created with headless browser	Sublime Security	2mo ago Jul 1st, 2026	Credential Phishing Evasion PDF Content analysis Exif analysis File analysis Optical Character Recognition
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
Brand impersonation: Adobe Acrobat Sign PDF phishing file format template	Sublime Security	3mo ago Jun 1st, 2026	Credential Phishing Impersonation: Brand PDF Computer Vision Optical Character Recognition File analysis
Brand impersonation: Amazon Web Services (AWS)	Sublime Security	1mo ago Jul 27th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Optical Character Recognition Sender analysis Natural Language Understanding
Brand impersonation: Amazon with suspicious attachment	Sublime Security	4mo ago Apr 14th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: DocuSign branded attachment lure with no DocuSign links	Sublime Security	10mo ago Oct 22nd, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL screenshot
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 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: Fake procurement/RFQ PDF from energy and industrial companies	Sublime Security	2mo ago Jun 25th, 2026	BEC/Fraud Impersonation: Brand PDF Social engineering Image as content Optical Character Recognition File analysis Content 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: 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: Greetings Island	Sublime Security	23d ago Aug 18th, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Social engineering Image as content Spoofing Content analysis Computer Vision Optical Character Recognition Header analysis HTML analysis Sender analysis
Brand impersonation: Internal Revenue Service	Sublime Security	1mo ago Jul 27th, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Optical Character Recognition Sender 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 quarantine release notification in image attachment	Sublime Security	1y ago Jul 16th, 2025	Credential Phishing Free file host Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Microsoft Teams	Sublime Security	2y ago Dec 3rd, 2024	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Optical Character Recognition Sender 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: SendGrid	Sublime Security	1mo ago Aug 7th, 2026	BEC/Fraud Credential Phishing Spam Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
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
Brand Impersonation: Shein	Sublime Security	1mo ago Jul 27th, 2026	Credential Phishing Spam Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Square	Sublime Security	1mo ago Jul 27th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis

85 Rules

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