Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bb159a706596ff4…

MALICIOUS

PDF

232.1 KB Created: 2017-11-17 05:27:58 -08:00 Authoring application: Microsoft® Word 2016
MD5: 173529c085c7bea4e014a4aff13c1a78 SHA-1: 314c004ed686180d1b465ffa7f7eebec3243f4b6 SHA-256: 0bb159a706596ff4da74f56a98660dbf22fff41d1d8d3800c7427927d50d080f
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as a malicious dropper by ClamAV. It employs an image-only lure, presenting a screenshot that likely contains a clickable element directing the user to the embedded URL. This URL, http://clc.co.id/09091/login.php?cmd=login_submit&id=f2dbf9c9f26f3135277c5185a8f883faf2dbf9c9f26f3135277c5185a8f883fa&session=f2dbf9c9f26f3135277c5185a8f883faf2dbf9c9f26f3135277c5185a8f883fa, appears to be a phishing page designed to harvest credentials. No scripts were extracted, but the PDF structure and embedded URI strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0333

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7227532-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7227532-0
  • 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 232 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://clc.co.id/09091/login.php?cmd=login_submit&id=f2dbf9c9f26f3135277c5185a8f883faf2dbf9c9f26f3135277c5185a8f883fa&session=f2dbf9c9f26f3135277c5185a8f883faf2dbf9c9f26f3135277c5185a8f883fa
    • 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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