sublimehighRule

Attachment: PDF with specific author metadata

Detects inbound messages containing PDF attachments where the EXIF metadata indicates the author or creator is 'Shelby Porter'.

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598

Detection Query

type.inbound
and length(filter(attachments, .file_type == "pdf")) >= 1
and any(filter(attachments, .file_type == "pdf"),
        beta.parse_exif(.).author == "Shelby Porter"
        or beta.parse_exif(.).creator == "Shelby Porter"
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Attachment: PDF with specific author metadata"
description: "Detects inbound messages containing PDF attachments where the EXIF metadata indicates the author or creator is 'Shelby Porter'."
type: "rule"
severity: "high"
source: |
  type.inbound
  and length(filter(attachments, .file_type == "pdf")) >= 1
  and any(filter(attachments, .file_type == "pdf"),
          beta.parse_exif(.).author == "Shelby Porter"
          or beta.parse_exif(.).creator == "Shelby Porter"
  )
  
attack_types:
  - "Credential Phishing"
tactics_and_techniques:
  - "PDF"
detection_methods:
  - "Exif analysis"
  - "File analysis"
id: "526238f7-82f1-5b6f-8e0c-b90f1e06cea8"