Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa57a8c4931cbcd…

MALICIOUS

PDF

164.9 KB Created: 2021-05-21 12:31:24 +03:00 Authoring application: Linda Simpson (via Dorothy Lane) First seen: 2021-06-04
MD5: d765c393d74d60523dc922f390235f08 SHA-1: ff3ffef61826c964d826d2e0d00bc504ac0da5ac SHA-256: 9aa57a8c4931cbcd2c95a7dcfd1921a9751fb7d5d566b9c12e1973753b26056e
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing a clickable action that directs users to an external URL. This is a common tactic for phishing campaigns to trick users into visiting malicious websites. The heuristic PDF_IMAGE_LURE_LOCAL_FILE_AND_REMOTE_URI also indicates the presence of remote links, further supporting the phishing lure hypothesis.

Machine Learning

  • Nyx PDF Classifier clean score 0.2356

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 164 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://bfiejbg.opfinity.com PDF link annotation

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