Malicious PDF — malware analysis report

Static analysis result for SHA-256 098796e1b82c199a…

MALICIOUS

PDF

212.1 KB
MD5: cba6bd373e42a7bcbc4c7251bc188b69 SHA-1: 21f4eb85170df7bbb7c4cf75fec67e435d6f8f7f SHA-256: 098796e1b82c199ad226bff056b6310262b132f6d06930d3c254c57bdf548187
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, indicating a downloader. While the embedded URLs are benign, the document body contains a reference to a Microsoft URL, potentially as a decoy. No scripts were extracted, and the primary indicators point to a downloader disguised as a document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6843

Heuristics 4

  • ClamAV: Win.Downloader.DocInPDF-10008217-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Downloader.DocInPDF-10008217-3
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://microsoft.com
    • http://schemas.microsoft.com/office/2004/12/omml
    • http://www.w3.org/TR/REC-html40
    • http://schemas.openxmlformats.org/drawingml/2006/main

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