Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3f9099505a5a882…

MALICIOUS

PDF

188.1 KB Created: 2021-05-24 07:09:35 +03:00 Authoring application: Catherine Barnes (via Frances Larson) First seen: 2021-06-04
MD5: cefcfacd1143467f5a481530ab81706f SHA-1: c6629cc6c24789eb0a9442b33a6e1ebce75aed0c SHA-256: b3f9099505a5a88272f86bcaa43610f5725619e373b59b3ef755acb510cd9e90
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as a lure, containing an image designed to trick the user into interacting with a malicious link. The presence of external URIs and a local builder path further suggests an attempt to redirect the user to a potentially harmful website for phishing or malware distribution. The document's structure and content strongly indicate a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier clean score 0.2414

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 188 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://zkwophl.3270emulation.com PDF link annotation

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