Attachment: PDF RFP lure

calendar Sep 3, 2026  ยท
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Detects inbound messages with PDF attachments that match a YARA signature identifying RFP-themed lure documents with a specific black and white lure.

Sublime rule (View on GitHub)

 1name: "Attachment: PDF RFP lure"
 2description: "Detects inbound messages with PDF attachments that match a YARA signature identifying RFP-themed lure documents with a specific black and white lure."
 3type: "rule"
 4severity: "medium"
 5source: |
 6  type.inbound
 7  and any(filter(attachments, .file_type == "pdf"),
 8          any(file.explode(.),
 9              any(.scan.yara.matches, .name == "pdf_rfp_bw_lure")
10          )
11  )  
12attack_types:
13  - "Credential Phishing"
14  - "BEC/Fraud"
15tactics_and_techniques:
16  - "PDF"
17  - "Social engineering"
18detection_methods:
19  - "YARA"
20  - "File analysis"
21id: "fab3980f-0201-5ba0-9ac0-e1d0649b6c08"
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