Malicious PDF — malware analysis report

Static analysis result for SHA-256 346953259b65c700…

MALICIOUS

PDF

131.7 KB Created: 2021-05-21 14:47:25 +03:00 Authoring application: Daniel Chavez (via Catherine Hunter) First seen: 2021-05-29
MD5: 13727d6d152983dfab57ff956b6a48af SHA-1: f56d9cc19e467806c2029ed672783c6e3ffb0583 SHA-256: 346953259b65c70025874eef79f4f23d626ccad1b41cdd4e34f2d5d66922cc2a
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-based lure, containing a screenshot designed to trick users into interacting with a malicious link. The embedded URL 'http://hmqqxkw.criterx.com' is a primary indicator of a phishing or malware distribution attempt. The presence of a local builder path alongside remote URIs further suggests a crafted malicious document.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3738

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 131 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://hmqqxkw.criterx.com PDF link annotation