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 Object Hash - Encrypted PDFs with fake payment notification	Sublime Security	7mo ago Mar 2nd, 2026	Malware/Ransomware PDF Evasion File analysis Threat intelligence
Attachment: PDF Object Hash - Encrypted PDF with blue doc icon	Sublime Security	16d ago Oct 9th, 2026	Credential Phishing PDF File analysis
Attachment: PDF Object Hash - Encrypted PDF with proposal bid lure	Sublime Security	1mo ago Sep 22nd, 2026	Malware/Ransomware PDF File analysis Threat intelligence
Attachment: PDF Object Hash - Generic MSFT lure	Sublime Security	24d ago Oct 1st, 2026	Credential Phishing PDF File analysis
Attachment: PDF Object Hash with Blue File Icon	Sublime Security	4mo ago Jun 5th, 2026	Malware/Ransomware PDF Evasion File analysis
Attachment: PDF proposal with credential theft indicators	Sublime Security	2mo 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	1mo ago Sep 3rd, 2026	Credential Phishing BEC/Fraud PDF Social engineering YARA File analysis
Attachment: PDF small QR code template	Sublime Security	5d ago Oct 20th, 2026	Credential Phishing PDF QR code File analysis YARA QR code analysis
Attachment: PDF teal SharePoint lure	Sublime Security	20d ago Oct 5th, 2026	Credential Phishing PDF File analysis YARA
Attachment: PDF templated investment lure	Sublime Security	2mo ago Aug 19th, 2026	Malware/Ransomware Credential Phishing PDF Social engineering YARA File analysis
Attachment: PDF USDOC ITA signature lure	Sublime Security	6d ago Oct 19th, 2026	Credential Phishing Malware/Ransomware PDF File analysis YARA
Attachment: PDF W9 signature reuse	Sublime Security	27d ago Sep 28th, 2026	BEC/Fraud PDF Social engineering File analysis YARA
Attachment: PDF with a suspicious string and single URL	Sublime Security	2d ago Oct 23rd, 2026	Credential Phishing PDF Social engineering Evasion Content analysis File analysis URL analysis Exif analysis
Attachment: PDF with base64 JavaScript and eval functions	Sublime Security	2mo ago Aug 11th, 2026	Malware/Ransomware Evasion PDF File analysis Javascript analysis YARA
Attachment: PDF with blurry lure image	Sublime Security	4mo ago Jun 5th, 2026	Credential Phishing PDF File analysis YARA
Attachment: PDF with bolded passcode	Sublime Security	1mo 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	6mo 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	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 CVE-2026-34621 lures	Sublime Security	6mo ago Apr 22nd, 2026	Malware/Ransomware PDF File analysis YARA
Attachment: PDF with dub.sh shortened link	Sublime Security	1mo ago Sep 9th, 2026	Credential Phishing BEC/Fraud PDF Social engineering Evasion File analysis URL analysis
Attachment: PDF with eCheckRun lures	Sublime Security	4mo ago Jun 5th, 2026	Credential Phishing PDF File analysis YARA
Attachment: PDF with embedded box-lure and javascript	Sublime Security	2mo ago Aug 19th, 2026	Credential Phishing Malware/Ransomware PDF Social engineering Evasion File analysis YARA
Attachment: PDF with EOF MD5 hash marker	Sublime Security	1mo ago Sep 10th, 2026	Credential Phishing Malware/Ransomware PDF Evasion File analysis YARA
Attachment: PDF with fake invoice using suspicious font sizing	Sublime Security	4mo ago Jun 9th, 2026	BEC/Fraud Callback Phishing PDF Social engineering File analysis YARA Content analysis
Attachment: PDF with JSFck obfuscation	Sublime Security	6mo ago Apr 22nd, 2026	Malware/Ransomware Evasion PDF File analysis YARA
Attachment: PDF with link to DMG file download	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis Content analysis File analysis URL analysis
Attachment: PDF with link to zip containing a wsf file	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis Content analysis File 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 Microsoft compensation lure	Sublime Security	6d ago Oct 19th, 2026	BEC/Fraud Credential Phishing PDF Impersonation: Brand Social engineering YARA File analysis
Attachment: PDF with Microsoft Purview message impersonation	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand PDF Social engineering File analysis Natural Language Understanding Content analysis
Attachment: PDF with multistage landing - ClickUp abuse	Sublime Security	7mo ago Feb 27th, 2026	Credential Phishing Evasion Free file host Free subdomain host PDF Social engineering File analysis URL analysis Whois
Attachment: PDF with password in filename matching body text	Sublime Security	8mo ago Feb 19th, 2026	Malware/Ransomware Credential Phishing Encryption Evasion PDF Content analysis File analysis
Attachment: PDF with personal Microsoft OneNote URL	Sublime Security	10mo 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 Sep 22nd, 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	3mo 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 Sep 22nd, 2026	Credential Phishing PDF QR code Encryption Social engineering File analysis QR code analysis URL analysis
Attachment: PDF with ReportLab library and default metadata	Sublime Security	7mo ago Feb 27th, 2026	Credential Phishing PDF Evasion File analysis Exif analysis
Attachment: PDF With SAI Global ISO9001 Logo	Sublime Security	6mo ago Apr 15th, 2026	Credential Phishing Impersonation: Brand PDF File analysis YARA
Attachment: PDF with secure document acknowledgment prompt	Sublime Security	3mo ago Jul 17th, 2026	Credential Phishing Evasion PDF Social engineering Image as content Impersonation: Brand Content analysis File analysis YARA
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: PDF with specific author metadata	Sublime Security	4mo ago Jun 1st, 2026	Credential Phishing PDF Exif analysis File analysis
Attachment: PDF with specific blurred lure	Sublime Security	24d ago Oct 1st, 2026	Credential Phishing PDF Social engineering File analysis YARA
Attachment: PDF with specific W-9 lure	Sublime Security	3mo ago Jul 1st, 2026	BEC/Fraud PDF Social engineering File analysis YARA
Attachment: PDF with split QR code	Sublime Security	6mo ago Apr 15th, 2026	Credential Phishing Evasion PDF QR code File analysis YARA QR code analysis
Attachment: PDF with suspicious document view lure	Sublime Security	3mo ago Jul 14th, 2026	Malware/Ransomware PDF Social engineering Content analysis File analysis YARA
Attachment: PDF with suspicious HeadlessChrome metadata	Sublime Security	2mo ago Aug 24th, 2026	Credential Phishing Malware/Ransomware Evasion PDF File analysis Exif analysis
Attachment: PDF with suspicious internal object reference identifier	Sublime Security	3mo ago Jun 29th, 2026	BEC/Fraud PDF Content analysis File analysis
Attachment: PDF with suspicious language and redirect to suspicious file type	Sublime Security	9mo 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	2mo 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	6mo ago Apr 23rd, 2026	Credential Phishing Malware/Ransomware PDF Social engineering Evasion File analysis YARA

376 Rules

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