sublimemediumRule

Attachment: PDF with eCheckRun lures

Detects PDF attachments matching yara rules looking for attachments containing artifacts from related to fake financial/invoice themes, including eCheckRun lures. These are commonly used to trick users into believe they have received legitmate electronic payment messages.

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598

Detection Query

type.inbound
and any(filter(attachments, .file_type == "pdf"),
        any(file.explode(.),
            any(.scan.yara.matches, .name in ("pdf_eCheckLure_format", ))
        )
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Attachment: PDF with eCheckRun lures"
description: "Detects PDF attachments matching yara rules looking for attachments containing artifacts from related to fake financial/invoice themes, including eCheckRun lures. These are commonly used to trick users into believe they have received legitmate electronic payment messages."
type: "rule"
severity: "medium"
source: |
  type.inbound
  and any(filter(attachments, .file_type == "pdf"),
          any(file.explode(.),
              any(.scan.yara.matches, .name in ("pdf_eCheckLure_format", ))
          )
  )
attack_types:
  - "Credential Phishing"
tactics_and_techniques:
  - "PDF"
detection_methods:
  - "File analysis"
  - "YARA"
id: "577991e1-b7c4-5f35-a2ca-239424062e7d"