Medium Severity

Attachment: PDF Object Hash - Encrypted PDF with proposal bid lure

Description

Detects inbound emails containing PDF attachments whose embedded objects match known malicious object hashes observed in encrypted PDFs with a bid proposal.

References

No references.

Sublime Security
Created Sep 11th, 2026 • Last updated Sep 22nd, 2026
Source
type.inbound
and any(filter(attachments, .file_type == "pdf"),
        any(file.explode(.),
            .scan.pdf_obj_hash.object_hash in (
              "c515d2cb8f93b87bc4891a411ab37e6d",
              "a67f29d92dd43a924218dc6a437c13d6"
            )
        )
)
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