Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c8728cf2cbeba14…

MALICIOUS

PDF

45.3 KB Created: 2019-04-07 18:03:27 +03:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.14)
MD5: 6b49a1a4078272daae9e1de9cac16f95 SHA-1: 79d75ed0e7fe7af9f3a208fedfe1a237014bce48 SHA-256: 6c8728cf2cbeba1479f180c9ccaf2a2a97fd9366c90a290740644039ddf396e7
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, pointing to various PDF files on the domain 'gorillawalker.com'. While no scripts were explicitly extracted, the ML classifier flagged the PDF as malicious, suggesting a hidden or obfuscated malicious component. The primary attack pattern appears to be a link farm designed to manipulate search engines or distribute potentially malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8974

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/analogue-electronic-circuits-and-systems-electronics-texts-for-engineers-and.pdf
    • http://www.gorillawalker.com/lego-play-book-ideas-to-bring-your-bricks-to-life.pdf
    • http://www.gorillawalker.com/how-to-master-the-sport-of-darts.pdf
    • http://www.gorillawalker.com/klavier-werke-works-for-pianoforte-vol-1-7-edition-breitkopf.pdf
    • http://www.gorillawalker.com/hanging-from-a-tree-by-my-knees.pdf
    • http://www.gorillawalker.com/le-plaisir-nouvel-enjeu-du-management-pourquoi-comment-french-edition.pdf
    • http://www.gorillawalker.com/pavements-in-the-garden-the-suburbanization-of-southern-new-jersey.pdf
    • http://www.gorillawalker.com/danse-macabre-and-other-works-for-solo-piano-dover-music.pdf
    • http://www.gorillawalker.com/blacky-the-crow.pdf
    • http://www.gorillawalker.com/living-up-there-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/waterjetting-technology.pdf
    • http://www.gorillawalker.com/ricky-s-business.pdf
    • http://www.gorillawalker.com/natural-standard-herbal-pharmacotherapy-an-evidence-based-approach-1e.pdf
    • http://www.gorillawalker.com/el-libro-de-patchwork-facil-y-rapido-spanish-edition.pdf
    • http://www.gorillawalker.com/the-presidency-of-james-buchanan-american-presidency-series.pdf
    • http://www.gorillawalker.com/the-molecular-orbital-theory-of-organic-chemistry.pdf
    • http://www.gorillawalker.com/funtime-favorites-level-3a-3b-funtime-piano.pdf
    • http://www.gorillawalker.com/der-schutz-von-betriebs-und-gesch-ftsgeheimnissen-und-das-akteneinsichtsrecht.pdf
    • http://www.gorillawalker.com/the-thomas-guide-bay-area-metro-street-guide-rand-mcnally.pdf
    • http://www.gorillawalker.com/the-medical-school-game-a-quest-for-the-fat-envelope.pdf
    • http://www.gorillawalker.com/mock-baroque-a-suite-of-20th-century-dances-for-recorder.pdf
    • http://www.gorillawalker.com/introduction-to-managerial-accounting-5e-western-kentucky-university.pdf
    • http://www.gorillawalker.com/theory-of-spiritual-care-for-nursing-practice.pdf
    • http://www.gorillawalker.com/annual-report-of-the-scottish-legal-services-ombudsman-1995-house.pdf
    • http://www.gorillawalker.com/the-dead-sea-scrolls-on-the-identity-of-mashiach-the.pdf
    • http://www.gorillawalker.com/cookery-of-england-penguin-cookery-library.pdf
    • http://www.gorillawalker.com/queen-victoria-and-the-discovery-of-the-riviera.pdf
    • http://www.gorillawalker.com/architectural-illustration-in-watercolor-techniques-for-beginning-and-advanced-professionals.pdf
    • http://www.gorillawalker.com/the-harvard-brief-dictionary-on-music.pdf
    • http://www.gorillawalker.com/blueprint-for-revolution-how-to-use-rice-pudding-lego-men.pdf
    • http://www.gorillawalker.com/perinatal-continuing-education-program-pcep-maternal-and-fetal-evaluation-and.pdf
    • http://www.gorillawalker.com/pathological-potential-of-neuroglia-possible-new-targets-for-medical-intervention.pdf
    • http://www.gorillawalker.com/nine-faces-of-kenya-portrait-of-a-nation.pdf
    • http://www.gorillawalker.com/the-land-of-pygmies.pdf
    • http://www.gorillawalker.com/the-hours-of-catherine-of-cleves-with-slip-case.pdf
    • http://www.gorillawalker.com/de-regreso-al-mar-readers-for-writers-fluent-spanish.pdf
    • http://www.gorillawalker.com/surprised-by-laughter.pdf
    • http://www.gorillawalker.com/body-of-knowledge-review-series-2nd-edition-human-resource-management.pdf
    • http://www.gorillawalker.com/t-ai-chi-form-37-steps-to-happiness.pdf
    • http://www.gorillawalker.com/opus-vita.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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