Malicious PDF — malware analysis report

Static analysis result for SHA-256 86db2a025d58eb89…

MALICIOUS

PDF

39.2 KB Created: 2018-11-30 20:23:24 +03:00 Authoring application: FrameMaker 7.2 (via Acrobat Distiller 7.0 (Windows))
MD5: 23251c72636a5012180ae997f529d839 SHA-1: 6bb3bd8801fa1638369e0c7cb98764345dec7e01 SHA-256: 86db2a025d58eb89aaf5c81caccd3eac268def88c846c855343b4499ec221a07
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 PDF documents hosted on 'gorillawalker.com'. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine results or to distribute a large number of potentially malicious documents. The ML_NYX_PDF_MALICIOUS classifier also flagged this file with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8901

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/lincoln-cent-1959-2009-collector-s-folder-warman-s-collector.pdf
    • http://www.gorillawalker.com/time-to-dream-time-passages.pdf
    • http://www.gorillawalker.com/build-your-own-low-cost-signal-generator.pdf
    • http://www.gorillawalker.com/online-business-computer-applications.pdf
    • http://www.gorillawalker.com/singular-perturbation-theory-an-introduction-with-applications.pdf
    • http://www.gorillawalker.com/analysis-of-aircraft-structures-an-introduction.pdf
    • http://www.gorillawalker.com/children-s-atlas.pdf
    • http://www.gorillawalker.com/vision-s-invisibles-philosophical-explorations-suny-series-in-contemporary-continental.pdf
    • http://www.gorillawalker.com/mafia-and-kilwa-into-africa-travel-guide-series.pdf
    • http://www.gorillawalker.com/starting-running-a-successful-consultancy-how-to-build-and-market.pdf
    • http://www.gorillawalker.com/novellette-no-8-in-f-sharp-minor-d-major-from.pdf
    • http://www.gorillawalker.com/berkshires-of-the-nickel-plate-road.pdf
    • http://www.gorillawalker.com/nonnus-of-nisibis-commentary-on-the-gospel-of-saint-john.pdf
    • http://www.gorillawalker.com/live-work-retire-buy-property-and-do-business-in-mauritius.pdf
    • http://www.gorillawalker.com/the-2009-2014-world-outlook-for-60-milligram-containers-of.pdf
    • http://www.gorillawalker.com/the-last-testament-of-lucky-luciano-the-mafia-story-in.pdf
    • http://www.gorillawalker.com/planet-beethoven-classical-music-at-the-turn-of-the-millennium.pdf
    • http://www.gorillawalker.com/dining-dakota-style-a-celebration-of-heartland-recipes-from-the.pdf
    • http://www.gorillawalker.com/yoo-hoo-little-rabbit-peek-a-board-books-tm.pdf
    • http://www.gorillawalker.com/grim-phantasms-fear-in-poes-garland-studies-in-nineteenth-century.pdf
    • http://www.gorillawalker.com/the-ghost-shift-a-novel.pdf
    • http://www.gorillawalker.com/draw-your-own-alphabets-thirty-fonts-to-scribble-sketch-and.pdf
    • http://www.gorillawalker.com/oxford-french-mini-dictionary.pdf
    • http://www.gorillawalker.com/like-a-waking-dream-the-autobiography-of-geshe-lhundub-sopa.pdf
    • http://www.gorillawalker.com/dia-de-muertos-en-mexico-oaxaca-a-traves-de-los.pdf
    • http://www.gorillawalker.com/introduction-to-quadratic-forms-die-grundlehren-der-mathematischen-wissenschaften-in.pdf
    • http://www.gorillawalker.com/dark-needs-kindle-edition.pdf
    • http://www.gorillawalker.com/we-love-cosplay-girls-more-live-animation-heroines-from-japan.pdf
    • http://www.gorillawalker.com/the-blissfully-dead-a-detective-lennon-thriller.pdf
    • http://www.gorillawalker.com/massage-parlor-pounding-taboo-gay-erotica.pdf
    • http://www.gorillawalker.com/geology-of-the-ikutha-area-degree-sheet-60-n-w.pdf
    • http://www.gorillawalker.com/nichiren-shu-service-gongyo-with-additional-prayers.pdf
    • http://www.gorillawalker.com/world-order.pdf
    • http://www.gorillawalker.com/walking-historic-galveston-a-guide-to-its-neighborhoods.pdf
    • http://www.gorillawalker.com/healthcare-and-smart-housing-technologies-report-of-a-dti-international.pdf
    • http://www.gorillawalker.com/introduction-to-psychology-study-guide.pdf
    • http://www.gorillawalker.com/basic-urologic-laparoscopy.pdf
    • http://www.gorillawalker.com/game-of-kings-unabridged-cd-audiobook-the-lymond-chronicles-book.pdf
    • http://www.gorillawalker.com/man-with-a-mission-star-wars-boba-fett-bargain-price.pdf
    • http://www.gorillawalker.com/li-dazhao-collected-works.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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