Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad97f0c40a3b2eb6…

MALICIOUS

PDF

70.7 KB Created: 2021-06-03 22:49:27 +03:00 Authoring application: Martin Walker (via Jeremy Andrews Jr. Sr. I II III IV V MD DDS PhD DVM) First seen: 2021-06-13
MD5: 7d34025be88d9cceb1fdf0cb2b9b6663 SHA-1: 610a841eb9a02c94858c2d65603ebb70619b5eed SHA-256: ad97f0c40a3b2eb677a2cf7df4121feb2f0815992e18fd23fee2721f4a304890
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is an image-only PDF, a common lure technique to trick users into clicking on embedded links. The PDF contains a screenshot and a clickable action that directs to the URL http://b5m7wxs.apartmentsagents.com. The presence of a local builder path alongside the remote URI suggests the document was constructed with malicious intent to deliver a payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3056

Heuristics 4

  • Image-only PDF carries local builder path plus remote links high PDF_IMAGE_LURE_LOCAL_FILE_AND_REMOTE_URI
    PDF is an image-only click lure that contains both remote HTTP(S) destinations and a file:/// URI exposing a local Windows/Linux builder path. That co-occurrence is not normal document linking; it matches generated clickbait/phishing carriers where the visible page is a screenshot and the clickable area sends the user to external infrastructure.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 70 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://b5m7wxs.apartmentsagents.com PDF link annotation

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