Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e784bcb26db8bcf…

MALICIOUS

PDF

34.7 KB Created: 2015-12-17 22:57:04 UTC Authoring application: Nitro Pro
MD5: d2d38b2a679adeefb7b7fb2d80665f24 SHA-1: 6800ec3f42818b18d2060c919c27e662a86652dc SHA-256: 3e784bcb26db8bcf5ccdda09a6a06105dace19409163ba0374777e394bbd9870
82 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ClamAV and exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing a clickable external URI. The heuristic PDF_IMAGE_LURE indicates that the document is designed to trick users into interacting with a malicious link. The embedded URL http://bursahirdavat.net/ve5/nnhh/mg/Hush/index.htm is the primary indicator of compromise, likely serving as the initial landing page for a phishing campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.0153

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7252821-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7252821-0
  • 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 34 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://bursahirdavat.net/ve5/nnhh/mg/Hush/index.htm
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/

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