Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca8c6acee959ed9b…

MALICIOUS

PDF

174.6 KB Created: 2020-10-26 23:27:12 +03:00 Authoring application: John Dean (via Peter Carr)
MD5: 72f10137f0534df25fd580da5a7190ba SHA-1: dcd1b1622e8ec2bf8c1e56dd3c2cd161815dfc38 SHA-256: ca8c6acee959ed9b36505c91bcba701faa037f086dccd494369cfa8c957446eb
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file is identified as an image-only lure, designed to trick users into clicking on an embedded action. This action redirects to external URLs, such as http://4aerbrk.xmi and http://ifb6lof.sed.hyperiondownstream.com, which are likely used to deliver malicious content or conduct phishing. The presence of a local builder path in the heuristics further suggests a crafted phishing document.

Machine Learning

  • Nyx PDF Classifier clean score 0.1833

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 174 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://4aerbrk.xmi
    • http://ifb6lof.sed.hyperiondownstream.com

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