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 Mar 27th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Attachment: Compensation review lure with QR code	Sublime Security	3mo ago Dec 10th, 2025	Credential Phishing PDF QR code Social engineering File analysis Optical Character Recognition QR code analysis Natural Language Understanding Sender analysis Header analysis
Attachment: Fake voicemail via PDF	Sublime Security	7mo ago Aug 5th, 2025	Credential Phishing PDF QR code Social engineering Computer Vision Content analysis File analysis Optical Character Recognition QR code analysis URL analysis
Attachment: HTML smuggling - QR Code with suspicious links	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing QR code Computer Vision Header analysis Natural Language Understanding QR code analysis Sender analysis URL analysis URL screenshot
Attachment: PDF with recipient email in link	Sublime Security	27d ago Mar 3rd, 2026	Credential Phishing PDF QR code Encryption Social engineering File analysis QR code analysis URL analysis
Attachment: QR code link with base64-encoded recipient address	Sublime Security	2mo ago Jan 12th, 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	2mo ago Jan 12th, 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	1mo 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	1mo 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	1mo ago Feb 21st, 2026	Credential Phishing QR code Evasion Social engineering Archive analysis File analysis QR code analysis URL analysis
Attachment: QR code with userinfo portion	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion Image as content PDF QR code QR code analysis File analysis Sender analysis
Attachment: SVG files with evasion elements	Sublime Security	7mo ago Aug 8th, 2025	Malware/Ransomware Credential Phishing QR code Image as content Evasion File analysis XML analysis QR code analysis Sender analysis
Brand impersonation: Adobe (QR code)	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand PDF QR code Computer Vision Header analysis QR code analysis Sender analysis
Brand impersonation: DocuSign (QR code)	Sublime Security	5mo ago Oct 15th, 2025	Credential Phishing Impersonation: Brand PDF QR code Social engineering Computer Vision Header analysis QR code analysis Sender analysis
Brand impersonation: DocuSign with embedded QR code	Sublime Security	5mo ago Oct 17th, 2025	Credential Phishing Evasion Image as content Impersonation: Brand QR code Computer Vision Content analysis QR code analysis Sender analysis
Brand Impersonation: Google (QR Code)	Sublime Security	5mo ago Oct 17th, 2025	Credential Phishing Impersonation: Brand PDF QR code Computer Vision Header analysis QR code analysis Sender analysis
Brand impersonation: Microsoft (QR code)	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand PDF QR code Social engineering Computer Vision Header analysis QR code analysis Sender analysis
Compensation review with QR code in attached EML	Sublime Security	4mo ago Nov 26th, 2025	Credential Phishing QR code Social engineering Computer Vision Content analysis Optical Character Recognition QR code analysis
Extortion / Sextortion - PDF attachment leveraging breach data from freemail sender	Sublime Security	1y ago Feb 3rd, 2025	BEC/Fraud Free email provider PDF Social engineering QR code Content analysis File analysis QR code analysis
Link: QR code in EML attachment with credential phishing indicators	Sublime Security	3mo ago Dec 2nd, 2025	Credential Phishing Evasion Open redirect QR code Computer Vision Content analysis File analysis QR code analysis
Link: QR code with phishing disposition in img or pdf	Sublime Security	8mo ago Jul 30th, 2025	Credential Phishing QR code Social engineering Content analysis Computer Vision QR code analysis Sender analysis URL analysis
Link: QR Code with suspicious language (untrusted sender)	Sublime Security	8mo ago Jul 30th, 2025	Credential Phishing Impersonation: Brand QR code Social engineering Content analysis Computer Vision Natural Language Understanding QR code analysis Sender analysis URL analysis
Open redirect: typedrawers.com	Sublime Security	10mo ago May 23rd, 2025	Credential Phishing Evasion Open redirect QR code Social engineering Content analysis File analysis QR code analysis Sender analysis
QR Code with suspicious indicators	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing QR code Social engineering Content analysis Header analysis Computer Vision Natural Language Understanding QR code analysis Sender analysis URL analysis
Service abuse: Monday.com infrastructure with phishing intent	Sublime Security	21d ago Mar 9th, 2026	Credential Phishing Evasion Social engineering QR code Content analysis File analysis Header analysis QR code analysis Sender analysis URL analysis

24 Rules