Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a718c12b26f4f1…

MALICIOUS

PDF

41.6 KB Created: 2018-12-28 08:09:04 +03:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.17)
MD5: 622061c85d6788014348c3921433a67a SHA-1: 1c7bdfb92341e4b495f8cb75b4b3ae4631657543 SHA-256: 67a718c12b26f4f1f2d2b8d621abfa9617eaa5feb5256d8978742b5338cf4397
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, as detected by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to manipulate search engine results or distribute content from the `www.gorillawalker.com` domain, potentially as a lure or to host further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/over-the-himalaya-bookwise-edition.pdf
    • http://www.gorillawalker.com/52-alabama-weekends.pdf
    • http://www.gorillawalker.com/gm-metro-sprint-1985-93-chilton-s-total-car-care.pdf
    • http://www.gorillawalker.com/50-ways-to-eat-chicken-valente-family-recipes-book-2.pdf
    • http://www.gorillawalker.com/iso-15788-1-1999-animal-and-vegetable-fats-and-oils.pdf
    • http://www.gorillawalker.com/stages-of-ages-rechilding-your-inner-child.pdf
    • http://www.gorillawalker.com/myopia-and-glaucoma.pdf
    • http://www.gorillawalker.com/investing-in-japan-the-portfolio-manager-s-guide-to-stocks.pdf
    • http://www.gorillawalker.com/riding-a-tiger-dilemmas-of-integration-and-decentralization-in-indonesia.pdf
    • http://www.gorillawalker.com/31-paleo-meatless-dishes-quick-and-easy-recipes-for-side.pdf
    • http://www.gorillawalker.com/in-front-of-god-and-everyone.pdf
    • http://www.gorillawalker.com/recollections-and-reflections.pdf
    • http://www.gorillawalker.com/noetica-spanish-edition.pdf
    • http://www.gorillawalker.com/mome-fall-2007-vol-9.pdf
    • http://www.gorillawalker.com/the-enclave-of-scientists-book-one-hunted-the-enclave-saga.pdf
    • http://www.gorillawalker.com/religious-vocation-its-juridic-concept-1953-cua-studies-in-canon.pdf
    • http://www.gorillawalker.com/three-who-survived-child-survivors-of-world-war-ii.pdf
    • http://www.gorillawalker.com/shtf-arsenal-choosing-the-best-guns-and-ammo-for-your.pdf
    • http://www.gorillawalker.com/outside-the-wall-a-puerto-rican-woman-s-struggle.pdf
    • http://www.gorillawalker.com/the-ultimate-mma-fighter-training-manual-the-mma-specialty-fitness.pdf
    • http://www.gorillawalker.com/you-only-live-once-snap-decision.pdf
    • http://www.gorillawalker.com/challenging-logic-puzzles-mensa.pdf
    • http://www.gorillawalker.com/cal-97-kathy-smith-living-fit-and-healthy.pdf
    • http://www.gorillawalker.com/a-practical-guide-to-solar-photovoltaic-systems-for-technicians-sizing.pdf
    • http://www.gorillawalker.com/contingency-in-madagascar-intellect-books-critical-photography.pdf
    • http://www.gorillawalker.com/turkey-s-southern-shore-the-classic-guides-to-turkey-2.pdf
    • http://www.gorillawalker.com/viola-wall-chart.pdf
    • http://www.gorillawalker.com/troposcatter-radio-links-artech-house-radar-library.pdf
    • http://www.gorillawalker.com/time-exploring-britain-s-lost-railways.pdf
    • http://www.gorillawalker.com/mercedes-benz-190-series-84-88-haynes-repair-manuals.pdf
    • http://www.gorillawalker.com/physics-for-cambridge-igcse.pdf
    • http://www.gorillawalker.com/tracy-mcgrady-the-inspiring-story-of-one-of-basketball-s.pdf
    • http://www.gorillawalker.com/richard-robinson-1628-93-and-the-quakers-of-wensleydale.pdf
    • http://www.gorillawalker.com/the-social-work-interview.pdf
    • http://www.gorillawalker.com/your-guide-to-back-pain-a-hodder-arnold-publication.pdf
    • http://www.gorillawalker.com/the-art-of-sexual-magic.pdf
    • http://www.gorillawalker.com/melanin.pdf
    • http://www.gorillawalker.com/ethan-s-wild-rose-bride-chance-creek-brides-the-early.pdf
    • http://www.gorillawalker.com/the-four-intelligences-of-the-business-mind-how-to-rewire.pdf
    • http://www.gorillawalker.com/an-easter-bunny-s-journey.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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