Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb28d3e662dc2120…

MALICIOUS

PDF

185.8 KB Created: 2017-11-17 12:14:23 -08:00 Authoring application: Microsoft® Word 2016
MD5: 248ab46b045eb0dc4f5021fbfff81323 SHA-1: c440043ce1561619c4c1ea89a6f38f088353cfcf SHA-256: cb28d3e662dc2120590f6a48ae8ea8b571453fcff2d134d211772fb747b38472
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and exhibits characteristics of a phishing lure, specifically an image-only document designed to trick users into clicking an embedded URI. The heuristic 'PDF_IMAGE_LURE' indicates a full-page screenshot hiding a clickable button. The embedded URL 'http://www.financialdoc.net/finance/fonts' is the primary indicator of a malicious destination.

Machine Learning

  • Nyx PDF Classifier clean score 0.0239

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7304208-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7304208-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 185 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://www.financialdoc.net/finance/fonts
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/

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