Malicious PDF — malware analysis report

Static analysis result for SHA-256 a641dd1dcec58220…

MALICIOUS

PDF

139.2 KB Created: 2021-06-02 17:19:28 +03:00 Authoring application: Keith Collins (via Brian Wright) First seen: 2021-06-13
MD5: 1807caaf1d9b83bef4a7b3c394d454a7 SHA-1: b752b1875bdac56f21db92b9a70d5a44fad5fa66 SHA-256: a641dd1dcec5822001593436120edaa31fae2175e2cf1ae03c2452add4e7385b
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF exhibits characteristics of a phishing lure, specifically an image-only document with an action trigger. It contains a remote URI pointing to 'http://rsxzwrn.soundmindstudio.com', suggesting the user is intended to navigate to this site. The presence of a local builder path alongside the remote URI further indicates a crafted malicious document.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4638

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 139 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://rsxzwrn.soundmindstudio.com PDF link annotation

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