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 Feb 6th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Attachment: Compensation review lure with QR code	Sublime Security	2mo 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	/feeds/core/detection-rules/attachment-compensation-review-lure-with-qr-code-9fd8185c
Attachment: Fake voicemail via PDF	Sublime Security	6mo 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	/feeds/core/detection-rules/attachment-fake-voicemail-via-pdf-d3587209
Attachment: HTML smuggling - QR Code with suspicious links	Sublime Security	28d ago Jan 12th, 2026	Credential Phishing QR code Computer Vision Header analysis Natural Language Understanding QR code analysis Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/attachment-html-smuggling-qr-code-with-suspicious-links-010e757d
Attachment: PDF with recipient email in link	Sublime Security	19d ago Jan 21st, 2026	Credential Phishing PDF QR code Encryption Social engineering File analysis QR code analysis URL analysis	/feeds/core/detection-rules/attachment-pdf-with-recipient-email-in-link-0399d08f
Attachment: QR code link with base64-encoded recipient address	Sublime Security	28d 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	/feeds/core/detection-rules/attachment-qr-code-link-with-base64-encoded-recipient-address-927a0c1a
Attachment: QR code with credential phishing indicators	Sublime Security	28d 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	/feeds/core/detection-rules/attachment-qr-code-with-credential-phishing-indicators-9f1681e1
Attachment: QR code with encoded recipient targeting and redirect indicators	Sublime Security	10d ago Jan 30th, 2026	Credential Phishing QR code Evasion Image as content Open redirect Archive analysis File analysis QR code analysis URL analysis	/feeds/core/detection-rules/attachment-qr-code-with-encoded-recipient-targeting-and-redirect-indicators-5d51e565
Attachment: QR code with recipient targeting and special characters	Sublime Security	6d ago Feb 3rd, 2026	Credential Phishing QR code Social engineering Evasion File analysis QR code analysis URL analysis Computer Vision	/feeds/core/detection-rules/attachment-qr-code-with-recipient-targeting-and-special-characters-fc9e1c09
Attachment: QR code with userinfo portion	Sublime Security	28d ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion Image as content PDF QR code QR code analysis File analysis Sender analysis	/feeds/core/detection-rules/attachment-qr-code-with-userinfo-portion-9d62cc5c
Attachment: SVG files with evasion elements	Sublime Security	6mo ago Aug 8th, 2025	Malware/Ransomware Credential Phishing QR code Image as content Evasion File analysis XML analysis QR code analysis Sender analysis	/feeds/core/detection-rules/attachment-svg-files-with-evasion-elements-5d2dbb60
Brand impersonation: Adobe (QR code)	Sublime Security	28d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand PDF QR code Computer Vision Header analysis QR code analysis Sender analysis	/feeds/core/detection-rules/brand-impersonation-adobe-qr-code-2fc36c6d
Brand impersonation: DocuSign (QR code)	Sublime Security	3mo ago Oct 15th, 2025	Credential Phishing Impersonation: Brand PDF QR code Social engineering Computer Vision Header analysis QR code analysis Sender analysis	/feeds/core/detection-rules/brand-impersonation-docusign-qr-code-0b16c28a
Brand impersonation: DocuSign with embedded QR code	Sublime Security	3mo ago Oct 17th, 2025	Credential Phishing Evasion Image as content Impersonation: Brand QR code Computer Vision Content analysis QR code analysis Sender analysis	/feeds/core/detection-rules/brand-impersonation-docusign-with-embedded-qr-code-f5cde463
Brand Impersonation: Google (QR Code)	Sublime Security	3mo ago Oct 17th, 2025	Credential Phishing Impersonation: Brand PDF QR code Computer Vision Header analysis QR code analysis Sender analysis	/feeds/core/detection-rules/brand-impersonation-google-qr-code-7ffd184c
Brand impersonation: Microsoft (QR code)	Sublime Security	28d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand PDF QR code Social engineering Computer Vision Header analysis QR code analysis Sender analysis	/feeds/core/detection-rules/brand-impersonation-microsoft-qr-code-ed0f772a
Compensation review with QR code in attached EML	Sublime Security	2mo ago Nov 26th, 2025	Credential Phishing QR code Social engineering Computer Vision Content analysis Optical Character Recognition QR code analysis	/feeds/core/detection-rules/compensation-review-with-qr-code-in-attached-eml-98a2f03c
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	/feeds/core/detection-rules/extortion-sextortion-pdf-attachment-leveraging-breach-data-from-freemail-sender-efb5a213
Link: QR code in EML attachment with credential phishing indicators	Sublime Security	2mo ago Dec 2nd, 2025	Credential Phishing Evasion Open redirect QR code Computer Vision Content analysis File analysis QR code analysis	/feeds/core/detection-rules/link-qr-code-in-eml-attachment-with-credential-phishing-indicators-9908ed3a
Link: QR code with phishing disposition in img or pdf	Sublime Security	6mo ago Jul 30th, 2025	Credential Phishing QR code Social engineering Content analysis Computer Vision QR code analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-qr-code-with-phishing-disposition-in-img-or-pdf-8e8949f6
Link: QR Code with suspicious language (untrusted sender)	Sublime Security	6mo 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	/feeds/core/detection-rules/link-qr-code-with-suspicious-language-untrusted-sender-25a84d1c
Open redirect: typedrawers.com	Sublime Security	8mo ago May 23rd, 2025	Credential Phishing Evasion Open redirect QR code Social engineering Content analysis File analysis QR code analysis Sender analysis	/feeds/core/detection-rules/open-redirect-typedrawerscom-158d9e95
QR Code with suspicious indicators	Sublime Security	28d 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	/feeds/core/detection-rules/qr-code-with-suspicious-indicators-04f5c34f
Service abuse: Monday.com infrastructure with phishing intent	Sublime Security	28d ago Jan 12th, 2026	Credential Phishing Evasion Social engineering QR code Content analysis File analysis Header analysis QR code analysis Sender analysis URL analysis	/feeds/core/detection-rules/service-abuse-mondaycom-infrastructure-with-phishing-intent-a346e3b1

23 Rules