Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c8dc0863c0eb40…

MALICIOUS

PDF

32.3 KB Created: 2019-12-10 18:54:43 +03:00 Authoring application: Acrobat PDFMaker 9.1 for Word (via Adobe PDF Library 9.0)
MD5: ea34b772c08e1d1a05dd45cd6bbd2b3a SHA-1: b388dcad88727f30f349fea58f52af0d1aad546f SHA-256: 47c8dc0863c0eb402c1630065c37c05e90ebd735806505d896277f890a610b85
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links predominantly point to PDF files hosted on www.gorillawalker.com. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine results or to distribute further malicious content disguised as legitimate documents. The ML classifier also flagged this PDF 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/bendix-king-kln-89-qref-card-qref-avionics-quick-reference.pdf
    • http://www.gorillawalker.com/criminalistics-an-introduction-to-forensic-science-student-value-edition-11th.pdf
    • http://www.gorillawalker.com/ntc-s-dictionary-of-acronyms-and-abbreviations.pdf
    • http://www.gorillawalker.com/the-infectious-microbe.pdf
    • http://www.gorillawalker.com/imperfect-bifurcation-in-structures-and-materials-engineering-use-of-group.pdf
    • http://www.gorillawalker.com/95-windows-step-by-step.pdf
    • http://www.gorillawalker.com/the-white-dragon-dragonriders-of-pern-vol-3.pdf
    • http://www.gorillawalker.com/el-simbolo-perdido-mm-spanish-edition.pdf
    • http://www.gorillawalker.com/handbook-of-applied-thermal-design.pdf
    • http://www.gorillawalker.com/the-celtic-seers-source-book-vision-and-magic-in-the.pdf
    • http://www.gorillawalker.com/electro-optical-displays-optical-science-and-engineering.pdf
    • http://www.gorillawalker.com/daniel-x-game-over-kindle-edition.pdf
    • http://www.gorillawalker.com/the-mighty-pigeon-club.pdf
    • http://www.gorillawalker.com/a-light-thanksgiving-day-brunch-recipe-menu.pdf
    • http://www.gorillawalker.com/raw-energy-bible-the.pdf
    • http://www.gorillawalker.com/jim-the-life-of-e-w-swanton.pdf
    • http://www.gorillawalker.com/the-colorectal-cancer-survival-guide-kindle-edition.pdf
    • http://www.gorillawalker.com/imhotep-stone-age-students-ayers-rock-glaciers-tasmanian-devil-virginia.pdf
    • http://www.gorillawalker.com/performance-lighting-design-how-to-light-for-the-stage-concerts.pdf
    • http://www.gorillawalker.com/mixed-methods-research-a-guide-to-the-field-mixed-methods.pdf
    • http://www.gorillawalker.com/top-100-praise-and-worship-songbook-volume-3-guitar-chord.pdf
    • http://www.gorillawalker.com/backstage-pleasures-first-tour-fresh-desires-tour-of-sin-book.pdf
    • http://www.gorillawalker.com/30-days-of-easy-entrees-for-the-single-vegetarian-kindle.pdf
    • http://www.gorillawalker.com/heinrich-scheidemann-s-keyboard-music-transmission-style-and-chronology.pdf
    • http://www.gorillawalker.com/anatomy-physiology-and-anatomy-physiology-online-package-8e-anatomy-physiology.pdf
    • http://www.gorillawalker.com/open-shop-building-construction-cost-data-means-open-shop-building.pdf
    • http://www.gorillawalker.com/the-snowboard-book-a-guide-for-all-boarders.pdf
    • http://www.gorillawalker.com/infected-die-like-supernovas-the-outlaw-volume-2.pdf
    • http://www.gorillawalker.com/the-watercolours-of-ireland-works-on-paper-in-pencil-pastel.pdf
    • http://www.gorillawalker.com/seidman-s-legislative-history-of-federal-income-tax-laws-1938.pdf
    • http://www.gorillawalker.com/miss-nelson-is-missing.pdf
    • http://www.gorillawalker.com/mccall-s-cooking-school-recipe-card-fish-seafood-2-bouillabaisse.pdf
    • http://www.gorillawalker.com/yellow-colors-all-around-us.pdf
    • http://www.gorillawalker.com/curriculum-based-assessment-a-primer.pdf
    • http://www.gorillawalker.com/computational-neuroscience-and-cognitive-modelling-a-student-s-introduction-to.pdf
    • http://www.gorillawalker.com/dark-dust.pdf
    • http://www.gorillawalker.com/picture-me-perfect-sammy-friends-1-siren-publishing-everlasting-classic.pdf
    • http://www.gorillawalker.com/new-orleans-in-photographs.pdf
    • http://www.gorillawalker.com/trial-practice-exercises-in-witness-examination-american-casebook-series-paperback.pdf
    • http://www.gorillawalker.com/commercial-ground-leases-august-2015-edition.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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