Malicious PDF — malware analysis report

Static analysis result for SHA-256 4473245330471ef5…

MALICIOUS

PDF

48.3 KB Created: 2019-04-05 10:34:56 +03:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.9)
MD5: 3c87f9907d9ddd8f546599ad4d4d9c9e SHA-1: 9670d48e874d98c4d429e74fd65d8143cfa934c3 SHA-256: 4473245330471ef5869ff2e7f84deab54de362c3b2e6384d2472c7ea92ead383
90 Risk Score

Malware Insights

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

The PDF was flagged by an ML classifier and contains a large number of external links, indicating a potential SEO manipulation or content distribution scheme. The embedded URLs point to various PDF documents hosted on the same domain. While no scripts were extracted, the sheer volume of links and the ML classification suggest malicious intent, possibly to drive traffic or host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8527

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/brush-your-cares-away-book-1-pencil-drawing.pdf
    • http://www.gorillawalker.com/beyond-category-the-life-and-genius-of-duke-ellington.pdf
    • http://www.gorillawalker.com/law-and-justice-as-seen-on-tv.pdf
    • http://www.gorillawalker.com/beneath-the-stetson-harlequin-desire-texas-cattleman-s-club.pdf
    • http://www.gorillawalker.com/hearts-on-the-line.pdf
    • http://www.gorillawalker.com/the-assimilation-rock-machine-become-bandidos-bikers-united-against-the.pdf
    • http://www.gorillawalker.com/making-your-mind-your-best-friend-a-handbook-of-applied.pdf
    • http://www.gorillawalker.com/enzyme-factor-2.pdf
    • http://www.gorillawalker.com/a-practical-approach-to-eighteenth-century-counterpoint.pdf
    • http://www.gorillawalker.com/the-industrial-revolution-american-history.pdf
    • http://www.gorillawalker.com/fundamentals-of-yoga-a-handbook-of-theory-practice-and-application.pdf
    • http://www.gorillawalker.com/erasmi-opera-omni-ord-ii-tom-9-adagiorum-collectanea-erasmi.pdf
    • http://www.gorillawalker.com/legal-bibliography-and-research-an-outlined-manual-on-the-use.pdf
    • http://www.gorillawalker.com/the-limits-of-neoliberalism-authority-sovereignty-and-the-logic-of.pdf
    • http://www.gorillawalker.com/robert-s-rules-of-order-modern-edition.pdf
    • http://www.gorillawalker.com/phishing-exposed.pdf
    • http://www.gorillawalker.com/hair-salon-marketing-achieve-greater-s-u-c-c-e.pdf
    • http://www.gorillawalker.com/media-writer-s-handbook.pdf
    • http://www.gorillawalker.com/healing-the-future-personal-recovery-from-societal-wounding.pdf
    • http://www.gorillawalker.com/a-way-across-the-mountain-joseph-walker-s-1833-trans.pdf
    • http://www.gorillawalker.com/the-wonderful-story-of-henry-sugar.pdf
    • http://www.gorillawalker.com/odd-meters-vol-1.pdf
    • http://www.gorillawalker.com/i-take-this-man-a-novel.pdf
    • http://www.gorillawalker.com/crocodile-stories-for-3-year-olds-animal-funtime.pdf
    • http://www.gorillawalker.com/rembrandt-and-his-circle-drawings-and-prints-metropolitan-museum-of.pdf
    • http://www.gorillawalker.com/wood-frame-construction-manual-workbook-design-of-wood-frame-buildings.pdf
    • http://www.gorillawalker.com/poised-for-success-mastering-the-four-qualities-that-distinguish-outstanding.pdf
    • http://www.gorillawalker.com/looseleaf-for-experience-spanish-student-edition.pdf
    • http://www.gorillawalker.com/the-radio-amateur-s-handbook-1973-the-statndard-manual-of.pdf
    • http://www.gorillawalker.com/one-hundred-eight-vedic-upanishads-sanskrit-text-with-transliteration-english.pdf
    • http://www.gorillawalker.com/de-vogels-van-guyana-suriname-cayenne-en-demerara-volume-v.pdf
    • http://www.gorillawalker.com/the-herbarium-handbook.pdf
    • http://www.gorillawalker.com/flu-cold-proven-nature-cures-powerful-cures-to-treat-the.pdf
    • http://www.gorillawalker.com/liquid-crystals-experimental-study-of-physical-properties-and-phase-transitions.pdf
    • http://www.gorillawalker.com/mask-mi5-s-penetration-of-the-communist-party-of-great.pdf
    • http://www.gorillawalker.com/on-moral-business-classical-and-contemporary-resources-for-ethics-in.pdf
    • http://www.gorillawalker.com/go-west-young-women-petticoat-party.pdf
    • http://www.gorillawalker.com/advanced-data-mining-and-applications-9th-international-conference-adma-2013.pdf
    • http://www.gorillawalker.com/my-neighbor-is-a-slut-how-to-turn-your-wife.pdf
    • http://www.gorillawalker.com/peak-performance-shake-and-juice-recipes-for-soccer-increase-muscle.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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