Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa42543998e023fd…

MALICIOUS

PDF

235.8 KB Created: 2021-05-21 12:26:11 +03:00 Authoring application: Rebecca Riley (via Elizabeth Matthews) First seen: 2021-05-29
MD5: 2121d254e29a2c3da9373d6936988799 SHA-1: d7e22f833f871662aec20ef852600d6241414728 SHA-256: fa42543998e023fdffeb1d5b3e712233dd64a87a1867ed8cbf8639eab997f91c
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as an image-based lure, containing a screenshot designed to trick users into clicking an action. This action redirects to the external URL http://euxk3wq.mentorinabook.com. The presence of multiple remote URIs and a local builder path suggests an attempt to download and execute further malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.1363

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 235 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://euxk3wq.mentorinabook.com PDF link annotation

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