Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa9ff4778677b7b…

MALICIOUS

PDF

118.3 KB Created: 2021-06-03 21:32:42 +03:00 Authoring application: Kimberly Armstrong (via Marie Hart) First seen: 2021-06-13
MD5: 222027b2a4d87a079ab70f27621bece9 SHA-1: f6883ff66b2293ce1e16a79723c300bf61c93540 SHA-256: 9aa9ff4778677b7b1971ab473e6dad3f6f39b678a079472b9083a2e01c9730fb
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing a screenshot designed to trick users into clicking an embedded URI. The heuristic PDF_IMAGE_LURE_LOCAL_FILE_AND_REMOTE_URI indicates the presence of both a local builder path and remote links, with http://q9tgjno.byogi.com being the primary external URI. This suggests the document's purpose is to redirect the user to a malicious site for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5613

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 118 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://q9tgjno.byogi.com PDF link annotation

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