sublimemediumRule

Attachment: PDF Object Hash - Generic MSFT lure

Detects inbound emails containing PDF attachments where the PDF object hash matches a specific known object hash previously associated with generic Microsoft lures.

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598

Detection Query

type.inbound
and any(filter(attachments, .file_type == "pdf"),
        any(file.explode(.),
            .scan.pdf_obj_hash.object_hash == "fc52ac1737c442a200c7392061766221"
        )
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Attachment: PDF Object Hash - Generic MSFT lure"
description: "Detects inbound emails containing PDF attachments where the PDF object hash matches a specific known object hash previously associated with generic Microsoft lures."
type: "rule"
severity: "medium"
source: |
  type.inbound
  and any(filter(attachments, .file_type == "pdf"),
          any(file.explode(.),
              .scan.pdf_obj_hash.object_hash == "fc52ac1737c442a200c7392061766221"
          )
  )
attack_types:
  - "Credential Phishing"
tactics_and_techniques:
  - "PDF"
detection_methods:
  - "File analysis"
id: "11d517b4-5d86-5367-a44c-61faf1db12db"