Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a291e2a2138ea3…

MALICIOUS

PDF

113.5 KB Created: 2021-05-20 00:30:04 +03:00 Authoring application: Steven Stephens (via Ralph Black) First seen: 2021-05-23
MD5: dbdf552c7c6f2d64b576bc450bbbdad4 SHA-1: e4193effc3beca538ce1c9fc43fd1e3637f3c8e1 SHA-256: 36a291e2a2138ea39496de3f18fb53b6987b3d0b0bc116e5eb1f31161445b9ea
64 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 interacting with a malicious link. The embedded URL, http://l1lhwib.sed.ocscreenwriter.com, is the primary indicator of malicious intent. The presence of a local builder path further suggests a crafted phishing or malware delivery document.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4664

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 113 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://l1lhwib.sed.ocscreenwriter.com PDF link annotation

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