sublimemediumRule

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

Detects inbound messages containing a PDF attachment whose object structure matches a known malicious PDF object hash.

MITRE ATT&CK

Detection Query

type.inbound
and any(filter(attachments, .file_type == "pdf"),
        any(file.explode(.),
            .scan.pdf_obj_hash.object_hash == "24012ed37455f6b8581bae5c6fed0a6f"
        )
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

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