Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab755e9b85c66750…

MALICIOUS

PDF

33.2 KB Created: 2019-09-02 21:50:43 +03:00 Authoring application: TeX (via pdfTeX-1.40.16) First seen: 2020-12-25
MD5: 6db6f69dec9b6d597191bf412ebfa57f SHA-1: 3735d73e09f4f0402261b3d26a3658674ecbca0c SHA-256: ab755e9b85c667500ae7fa3bba486803f658a180bda646ea478c7a0ad1d4c80b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the 'PDF_SEO_LINK_FARM' heuristic. These links point to various book titles on the 'gorillawalker.com' domain. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine rankings or to distribute potentially malicious content through these URLs. The ML classifier also flagged the document as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/the-7-habits-of-highly-effective-teens-the-ultimate-teenage.pdf In PDF document text
    • http://www.gorillawalker.com/the-mirror-inside-a-journey-to-finding-answers-to-ulcerative.pdfIn PDF document text
    • http://www.gorillawalker.com/mastering-second-grade-skills.pdfIn PDF document text
    • http://www.gorillawalker.com/ti-35-plus-guidebook-texas-instruments-scientific.pdfIn PDF document text
    • http://www.gorillawalker.com/the-contours-of-eurocentrism-race-history-and-political-texts.pdfIn PDF document text
    • http://www.gorillawalker.com/thomas-jefferson-lessons-from-a-secret-buddha.pdfIn PDF document text
    • http://www.gorillawalker.com/let-me-die-a-woman-the-why-and-how-of.pdfIn PDF document text
    • http://www.gorillawalker.com/when-we-were-animals-kindle-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/advanced-information-systems-engineering-12th-international-conference-caise-2000-stockholm.pdfIn PDF document text
    • http://www.gorillawalker.com/julia-s-menus-for-special-occasions-six-menus-for-special.pdfIn PDF document text
    • http://www.gorillawalker.com/pride-prejudice-2-v.pdfIn PDF document text
    • http://www.gorillawalker.com/bicycling-in-new-jersey-30-tours.pdfIn PDF document text
    • http://www.gorillawalker.com/comets-galaxy.pdfIn PDF document text
    • http://www.gorillawalker.com/the-dominance-of-the-male-gaze-in-hollywood-films-patriarchal.pdfIn PDF document text
    • http://www.gorillawalker.com/british-isles-folk-songs-alto-sax-take-the-lead.pdfIn PDF document text
    • http://www.gorillawalker.com/stateless-law-evolving-boundaries-of-a-discipline-juris-diversitas-digital.pdfIn PDF document text
    • http://www.gorillawalker.com/pinocchio-the-disney-epic.pdfIn PDF document text
    • http://www.gorillawalker.com/interpretation-of-the-consumer-protection-law-of-the-people-2013.pdfIn PDF document text
    • http://www.gorillawalker.com/fine-motor-skills-in-children-with-down-syndrome-a-guide.pdfIn PDF document text
    • http://www.gorillawalker.com/solos-for-the-horn-player-with-piano-accompaniment.pdfIn PDF document text
    • http://www.gorillawalker.com/gunslinger-british-universities.pdfIn PDF document text
    • http://www.gorillawalker.com/model-driven-architecture-applying-mda-to-enterprise-computing.pdfIn PDF document text
    • http://www.gorillawalker.com/france-country-studies.pdfIn PDF document text
    • http://www.gorillawalker.com/the-washington-manual-of-critical-care-lippincott-manual-series.pdfIn PDF document text
    • http://www.gorillawalker.com/small-business-health-insurance-market.pdfIn PDF document text
    • http://www.gorillawalker.com/surveillance-on-the-down-low.pdfIn PDF document text
    • http://www.gorillawalker.com/veronica-s-passport-archie-friends-all-stars.pdfIn PDF document text
    • http://www.gorillawalker.com/songbirds-of-turkey-atlas-of-biodiversity-of-turkish-passerine-birds.pdfIn PDF document text
    • http://www.gorillawalker.com/coaching-existencial-basado-en-los-principios-de-viktor-e-frankl.pdfIn PDF document text
    • http://www.gorillawalker.com/nigeria-echoes-of-a-century-1914-1999-volume-1.pdfIn PDF document text
    • http://www.gorillawalker.com/lama-chopa.pdfIn PDF document text
    • http://www.gorillawalker.com/the-archaeology-of-cyprus-from-earliest-prehistory-through-the-bronze.pdfIn PDF document text
    • http://www.gorillawalker.com/peaches-and-the-baby-mama-a-peaches-donnelly-mystery-kindle.pdfIn PDF document text
    • http://www.gorillawalker.com/farmers-almanac-gardening-2013-square-12x12-wall-calendar.pdfIn PDF document text
    • http://www.gorillawalker.com/let-s-go-the-budget-guide-to-london-1993-including.pdfIn PDF document text
    • http://www.gorillawalker.com/a-celebration-for-stanley-kunitz-on-his-eightieth-birthday.pdfIn PDF document text
    • http://www.gorillawalker.com/ebony-fever-vol-i-bwwm-erotica-doublepack.pdfIn PDF document text
    • http://www.gorillawalker.com/tempted-it-girl-book-6.pdfIn PDF document text
    • http://www.gorillawalker.com/vergil-aeneid-the-2nd-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/collins-pocket-french-dictionary.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

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