Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef5656f47c03d0e4…

MALICIOUS

PDF

33.8 KB Created: 2020-02-20 05:12:04 +03:00 Authoring application: QuarkXPress(R) 7.01
MD5: 00fbcbb58a1c4a0d6b17f49790e9f8f2 SHA-1: d2ce96a6a6efa7d95b84ba40cdbddaba3f950f86 SHA-256: ef5656f47c03d0e472c9123b83252dd825cbfd0489b4a353254708c9223ffe5d
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents on the domain 'gorillawalker.com'. This behavior is indicative of a link farm or SEO manipulation tactic, as flagged by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier also flagged the document as malicious. No scripts were extracted, and the document body was unreadable, but the sheer volume of links suggests an attempt to drive traffic or distribute potentially malicious content through these external PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8261

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/el-corsario-invicto-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/dreamweaver-4-fireworks-4-visual-jumpstart.pdf
    • http://www.gorillawalker.com/spectacular-homes-of-michigan-an-exclusive-showcase-of-michigan-s.pdf
    • http://www.gorillawalker.com/the-ethics-of-captivity.pdf
    • http://www.gorillawalker.com/the-somerset-thinking-skills-course-analysing-and-synthesising-module-2.pdf
    • http://www.gorillawalker.com/trace-metals-and-infectious-diseases-str-ngmann-forum-reports.pdf
    • http://www.gorillawalker.com/the-exotic-a-decadent-quest-s-u-n-y-series.pdf
    • http://www.gorillawalker.com/human-capital-analytics-how-to-harness-the-potential-of-your.pdf
    • http://www.gorillawalker.com/taxes-business-strategy.pdf
    • http://www.gorillawalker.com/no-safety-and-other-short-stories.pdf
    • http://www.gorillawalker.com/jawaharlal-nehru-a-biography-volume-3-1956-1964-1956-64.pdf
    • http://www.gorillawalker.com/a-preparation-guide-for-the-assessment-center-method.pdf
    • http://www.gorillawalker.com/raising-atlantis-atlantis-wisdom-volume-2.pdf
    • http://www.gorillawalker.com/foundations-of-optimization-graduate-texts-in-mathematics-vol-258.pdf
    • http://www.gorillawalker.com/sex-deceit-reality-tv.pdf
    • http://www.gorillawalker.com/jackal-finally-the-complete-story-of-the-legendary-terrorist-carlos.pdf
    • http://www.gorillawalker.com/making-money-online-how-to-work-from-home-virtually-with.pdf
    • http://www.gorillawalker.com/journal-of-three-years-residence-in-abyssinia.pdf
    • http://www.gorillawalker.com/hal-leonard-viva-la-vida-by-coldplay-arranged-for-piano.pdf
    • http://www.gorillawalker.com/the-menopause-book-by-barbara-kantrowitz-sep-15-2009.pdf
    • http://www.gorillawalker.com/a-little-bird-told-me-family-secrets-necessary-lies.pdf
    • http://www.gorillawalker.com/a-colour-guide-to-paleosols.pdf
    • http://www.gorillawalker.com/introduction-to-quantum-mechanics-second-edition.pdf
    • http://www.gorillawalker.com/rick-and-rachel-build-a-research-report-writing-builders.pdf
    • http://www.gorillawalker.com/the-army-lawyer-a-history-of-the-judge-advocate-general.pdf
    • http://www.gorillawalker.com/liquid-gold-ships-a-history-of-the-tanker-1859-1984.pdf
    • http://www.gorillawalker.com/the-ebony-column-classics-civilization-and-the-african-american-reclamation.pdf
    • http://www.gorillawalker.com/sports-coaching-a-reference-guide-for-students-coaches-and-competitors.pdf
    • http://www.gorillawalker.com/the-dolly-dialogues.pdf
    • http://www.gorillawalker.com/traffic-flow-fundamentals.pdf
    • http://www.gorillawalker.com/pseudomonas-genomics-and-molecular-biology.pdf
    • http://www.gorillawalker.com/a-dental-and-cytogenetic-study-of-the-marfan-syndrome.pdf
    • http://www.gorillawalker.com/la-divina-caricatura-bunraku-meets-motown-seagull-books-enactments.pdf
    • http://www.gorillawalker.com/love-and-football-love-never-fails-i-corinthians-13-8.pdf
    • http://www.gorillawalker.com/hal-leonard-sonata-for-clarinet-and-piano-book-and-cd.pdf
    • http://www.gorillawalker.com/the-best-of-hidden-upskirt-an-adult-picture-book.pdf
    • http://www.gorillawalker.com/one-day-we-met-the-lions.pdf
    • http://www.gorillawalker.com/god-s-unfinished-book-journeying-through-the-book-of-acts.pdf
    • http://www.gorillawalker.com/group-work-with-elders-50-therapeutic-exercises-for-reminiscence-validation.pdf
    • http://www.gorillawalker.com/lonely-planet-yellowstone-grand-teton-national-parks.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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