Attachment: PDF Object Hash - Encrypted PDF with blue doc icon

calendar Oct 9, 2026  ยท
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Detects inbound messages containing a PDF attachment whose object structure matches a known malicious PDF object hash.

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 1name: "Attachment: PDF Object Hash - Encrypted PDF with blue doc icon"
 2description: "Detects inbound messages containing a PDF attachment whose object structure matches a known malicious PDF object hash."
 3type: "rule"
 4severity: "medium"
 5source: |
 6  type.inbound
 7  and any(filter(attachments, .file_type == "pdf"),
 8          any(file.explode(.),
 9              .scan.pdf_obj_hash.object_hash == "24012ed37455f6b8581bae5c6fed0a6f"
10          )
11  )  
12attack_types:
13  - "Credential Phishing"
14tactics_and_techniques:
15  - "PDF"
16detection_methods:
17  - "File analysis"
18id: "0c2d79ef-6c79-5842-8d88-3c4a78c2cc6d"
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