Malicious PDF — malware analysis report

Static analysis result for SHA-256 7153539f4a5ff245…

MALICIOUS

PDF

24.3 KB Created: 2025-05-06 01:36:40 -07:00 Authoring application: Microsoft Word
MD5: ffa86748e5908eba394533ef90765d44 SHA-1: 40f5cba5d46653caff43a8c626b909e293018127 SHA-256: 7153539f4a5ff245bb49723ac4bc7059f82b39be6690c516237e112d18135f9b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF is an image-only document designed as a lure, containing a direct link to a compressed executable payload. This indicates a phishing attempt where the user is expected to download and extract the archive, likely leading to further malicious execution. The primary IOC is the direct download URL.

Machine Learning

  • Nyx PDF Classifier clean score 0.0083

Heuristics 3

  • PDF link points directly to executable/archive payload critical PDF_DIRECT_PAYLOAD_LINK
    PDF contains a clickable HTTP(S) URI whose path ends in an executable, script, shortcut, disk image, or archive extension. Documents can legitimately link to installers, so this is a high-risk delivery indicator rather than a standalone exploit fingerprint.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 24 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 https://app.box.com/shared/static/yqip91dgjcl2arjqhafcg8sysndqobzb.7z
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/pdfx/1.3/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/

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