Malicious PDF — malware analysis report

Static analysis result for SHA-256 25324b5841dd7b4c…

MALICIOUS

PDF

43.6 KB Created: 2019-03-16 18:13:53 +03:00 Authoring application: dvips(k) 5.993 Copyright 2013 Radical Eye Software (via GPL Ghostscript 9.14)
MD5: 902e4bb9e83cc25a0de2de6e1f02084b SHA-1: 2d8d9a2403ee8ad9211f8b3081ac2077411b9690 SHA-256: 25324b5841dd7b4c065c7ac8d4b08808b7a52057d20ca0133c0aaa1c8ec404ce
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 PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body appears to be malformed or obfuscated, but the presence of numerous links to PDFs on the same domain suggests a coordinated effort to distribute content or manipulate search engine results. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/ann-es-de-p-lerinage-ii-a-score-for-solo.pdf
    • http://www.gorillawalker.com/systems-in-english-grammar-an-introduction-for-language-teachers.pdf
    • http://www.gorillawalker.com/hormonal-harmony-from-pms-to-beyond-menopause.pdf
    • http://www.gorillawalker.com/lifeboat-gallantry-the-complete-record-of-royal-national-lifeboat-institution.pdf
    • http://www.gorillawalker.com/robert-fisk-on-israel-the-obama-years-a-unique-anthology.pdf
    • http://www.gorillawalker.com/the-value-of-friends-a-story-about-helping-friends-in.pdf
    • http://www.gorillawalker.com/oh-my-goddess-volume-48.pdf
    • http://www.gorillawalker.com/la-casa-de-la-troya-libro-cd-the-house-of.pdf
    • http://www.gorillawalker.com/eagles-up-close-time-for-kids-nonfiction-readers-time-for.pdf
    • http://www.gorillawalker.com/faa-di-bruno-hopf-algebras-dyson-schwinger-equations-and-lie.pdf
    • http://www.gorillawalker.com/introduction-to-the-study-of-dinosaurs.pdf
    • http://www.gorillawalker.com/crazy-in-love-the-beyonce-knowles-biography.pdf
    • http://www.gorillawalker.com/national-security-through-a-cockeyed-lens-how-cognitive-bias-impacts.pdf
    • http://www.gorillawalker.com/report-of-the-joint-national-committee-on-detection-evaluation-and.pdf
    • http://www.gorillawalker.com/seismic-waves-and-rays-in-elastic-media-volume-34-handbook.pdf
    • http://www.gorillawalker.com/replacing-your-boat-s-engine-manual.pdf
    • http://www.gorillawalker.com/pencil-drawing-observer-s-guides.pdf
    • http://www.gorillawalker.com/transformers-prime-meet-team-prime-passport-to-reading-level-2.pdf
    • http://www.gorillawalker.com/destructive-justice-a-lost-boy-a-broken-system-and-the.pdf
    • http://www.gorillawalker.com/contemporary-drama-performing-identity.pdf
    • http://www.gorillawalker.com/in-celebration-of-women-a-selection-of-words-and-paintings.pdf
    • http://www.gorillawalker.com/industrial-brazing-practice-second-edition.pdf
    • http://www.gorillawalker.com/money-for-graduate-students-in-the-arts-humanities-2003-2005.pdf
    • http://www.gorillawalker.com/acetaminophen-a-medical-dictionary-bibliography-and-annotated-research-guide-to.pdf
    • http://www.gorillawalker.com/lourdes-font-of-faith-hope-and-charity.pdf
    • http://www.gorillawalker.com/jimi-hendrix-blues-guitar-recorded-version.pdf
    • http://www.gorillawalker.com/food-safety.pdf
    • http://www.gorillawalker.com/circuit-design-with-vhdl.pdf
    • http://www.gorillawalker.com/you-teach-vol-1-videos-study-guides-and-sermon-illustrations.pdf
    • http://www.gorillawalker.com/vital-signs-and-measurements-delmar-s-nursing-assisting-video-series.pdf
    • http://www.gorillawalker.com/world-war-ii-a-historical-reader-mcdougal-littell-nextext-nextext.pdf
    • http://www.gorillawalker.com/third-day-time-guitar-tab-folio.pdf
    • http://www.gorillawalker.com/field-theory-handbook-including-coordinate-systems-differential-equations-and-their.pdf
    • http://www.gorillawalker.com/estate-planning-forms.pdf
    • http://www.gorillawalker.com/overruled-the-long-war-for-control-of-the-u-s.pdf
    • http://www.gorillawalker.com/epitaph-in-god-s-own-image-kindle-edition.pdf
    • http://www.gorillawalker.com/running-wild-the-men-from-battle-ridge.pdf
    • http://www.gorillawalker.com/the-institutions-of-american-democracy-the-press-institutions-of-american.pdf
    • http://www.gorillawalker.com/liquid-stone-new-architecture-in-concrete.pdf
    • http://www.gorillawalker.com/swindle.pdf
    • 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/

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