Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b5add03a6ed824f…

MALICIOUS

PDF

46.6 KB Created: 2018-11-30 20:02:34 +03:00 Authoring application: SYSTEM400 Rev 16.02 (via Acrobat Distiller 4.05 for Windows, Powered by PDF Polisher Pro 5.01 420)
MD5: ae9e6713d84ab966385359f8169c239a SHA-1: 62a1fe9c74f8cf14f83aa97058a0ccae8ff0fec8 SHA-256: 8b5add03a6ed824f6b35f4463111321f2443bb24ec900ef52e112c2d53b54199
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document as malicious. The primary function appears to be directing users to a link farm, likely for SEO manipulation or to serve as a distribution point for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8263

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/a-review-of-the-andaz-hotel-in-west-hollywood-california.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/