Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0355ccfa29c4ec…

MALICIOUS

PDF

41.8 KB Created: 2018-11-15 19:36:19 +03:00 Authoring application: - (via ProcessText Group)
MD5: fd3bf82b972a936fadb0588e8525bdaa SHA-1: e9e959f651ba299fe92d315e0fad3bfecd75fbe3 SHA-256: bd0355ccfa29c4ec68faf61e676801c0bfe4131e0281f6185c60b9ea2a40e82b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The primary attack pattern appears to be SEO manipulation or a link farm designed to distribute malicious content or redirect users. No scripts were extracted, limiting the ability to determine further payload delivery mechanisms.

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/disaster-at-the-pole-the-crash-of-the-airship-italia.pdf
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    • http://www.gorillawalker.com/mary-ann-shadd-cary-the-black-press-and-protest-in.pdf
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    • http://www.gorillawalker.com/breathing-webster-s-specialty-crossword-puzzles-volume-1-the-essentials.pdf
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    • http://www.gorillawalker.com/judas-maccabaeus-hallelujah-amen-keyboard-or-orchestra-choral-sheet-music.pdf
    • http://www.gorillawalker.com/quinze-etudes-de-rythme-pour-trombone-fifteen-rhythmical-studies-for.pdf
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    • http://www.gorillawalker
    • 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/