Malicious PDF — malware analysis report

Static analysis result for SHA-256 abaab0e96586dcaf…

MALICIOUS

PDF

42.9 KB Created: 2019-02-13 19:56:23 +03:00 Authoring application: AutoCAD 2010 2010 (18.0s (LMS Tech)) (via pdfplot10.hdi 10.0.55.0)
MD5: 4d3d47a822a7528e552e817f964175de SHA-1: b6ce87c281bea7a7641f74f1088aa2cd87850003 SHA-256: abaab0e96586dcaf7d4e8ed7b148a259d56e9b5a2f9752189ccd982b94d880b6
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a significant number of embedded links to external PDF files hosted on gorillawalker.com. This suggests a link farm or content distribution strategy. The primary attack pattern is likely SEO manipulation or potentially hosting malicious content disguised as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.gorillawalker.com/the-washer-of-the-ford-legendary-moralities-and-barbaric-tales.pdf
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    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/