Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eda0610413382a9…

MALICIOUS

PDF

174.3 KB Created: 2017-11-14 16:13:03 +02:00 Authoring application: Microsoft® Word 2016
MD5: 8eab1ffe49eb258e75406f0ea3cfe9f3 SHA-1: 5bcd90d81be29af125634ffb929c7b77873eef5f SHA-256: 8eda0610413382a9f771a449ee516b215ada6db5f4cf21b7a463adb9f113919a
82 Risk Score

Malware Insights

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

The PDF file is identified as a malicious dropper by ClamAV. It employs a common phishing tactic, presenting itself as an image-based lure to entice users into clicking an embedded URI. The primary malicious URL, https://lefebreymesa.com/firmas/folder/document/DOCsignsecured/DOCsignsecured/dsign/, is likely the next stage in the attack, potentially leading to further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0464

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7281975-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7281975-0
  • 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 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 https://lefebreymesa.com/firmas/folder/document/DOCsignsecured/DOCsignsecured/dsign/
    • 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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