Medium Severity

Attachment: Encrypted PDF With Credential Harvesting Indicators

Description

Detects encrypted PDF attachments containing patterns and indicators commonly associated with credential harvesting operations, identified through YARA signature analysis.

References

No references.

Sublime Security
Created Jun 5th, 2026 • Last updated Jun 5th, 2026
Source
type.inbound
and any(filter(attachments, .file_type == "pdf"),
        any(file.explode(.),
            any(.scan.yara.matches, .name in ("pdf_encrypted_cred_phish_001"))
        )
)
MQL Rule Console
DocsLearning Labs

Playground

Test against your own EMLs or sample data.

Share

Post about this on your socials.

Get Started. Today.

Managed or self-managed. No MX changes.

Deploy and integrate a free Sublime instance in minutes.
Get Started