• Sublime Core Feed
High Severity

Adobe branded PDF file linking to a password-protected file from untrusted sender

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Description

Detects pdf files with links to a remotely hosted password-protected file. This is a common technique

abused by Phishing actors as well as Malware actors (IcedID, Remcos, Async Rat)

References

No references.

Sublime Security
Created Aug 17th, 2023 • Last updated Feb 23rd, 2024
Feed Source
Sublime Core Feed
Source
GitHub
type.inbound
and any(attachments,
        .file_extension == "pdf"
        and any(file.explode(.),
                any(ml.nlu_classifier(.scan.ocr.raw).intents,
                    .name == "cred_theft" and .confidence == "high"
                )
                and strings.icontains(.scan.ocr.raw, "password-protected")
                and any(ml.nlu_classifier(.scan.ocr.raw).entities,
                        .name == "org" and .text == "Adobe"
                )
        )
)
and (
  profile.by_sender().prevalence in ("new", "outlier")
  or (
    profile.by_sender().any_messages_malicious_or_spam
    and not profile.by_sender().any_false_positives
  )
)

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