Malicious PDF — malware analysis report

Static analysis result for SHA-256 099af34119013466…

MALICIOUS

PDF

43.2 KB Created: 2018-11-15 18:31:44 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 7.0 (Windows))
MD5: 52402f9f3c50b0dd3d8ddc57f9d44e2a SHA-1: 4742d81ebf7fc8eec74ab408fbdc1f71e076c95f SHA-256: 099af341190134662b3bc544b090b5956513b52472c7baf5adff86bd40add387
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that contains a large number of embedded URLs pointing to external PDF files. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. While no scripts were explicitly extracted, the PDF structure and the heuristic firings suggest an attempt to redirect users to potentially harmful content hosted on www.gorillawalker.com.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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/ollie-moon.pdf
    • http://www.gorillawalker.com/gardening-with-heirloom-plants.pdf
    • http://www.gorillawalker.com/hbr-guide-to-office-politics-hbr-guide-series.pdf
    • http://www.gorillawalker.com/ship-ablaze-the-tragedy-of-the-steamboat-general-slocum.pdf
    • http://www.gorillawalker.com/asp-net-mvc-6-recipes-a-problem-solution-approach.pdf
    • http://www.gorillawalker.com/application-specific-integrated-circuits.pdf
    • http://www.gorillawalker.com/how-colonialism-preempted-modernity-in-africa-by-t-w-ol.pdf
    • http://www.gorillawalker.com/watercolor-step-by-step.pdf
    • http://www.gorillawalker.com/newport-streetwise-town-map-streetwise.pdf
    • http://www.gorillawalker.com/singing-in-zion-music-and-song-in-the-life-of.pdf
    • http://www.gorillawalker.com/critical-environments-postmodern-theory-and-the-pragmatics-of-the-oc.pdf
    • http://www.gorillawalker.com/the-ginormous-book-of-dirty-jokes-over-1-000-sick.pdf
    • http://www.gorillawalker.com/inorganic-chemistry-solutions-manual-to-4r-e-import-paperback.pdf
    • http://www.gorillawalker.com/yoko-ono-one-woman-show-1960-1971.pdf
    • http://www.gorillawalker.com/travels-with-charley-in-search-of-america.pdf
    • http://www.gorillawalker.com/the-hook-up-kindle-edition.pdf
    • http://www.gorillawalker.com/the-solar-system-our-universe.pdf
    • http://www.gorillawalker.com/the-children-s-book.pdf
    • http://www.gorillawalker.com/the-best-thigh-exercises-you-ve-never-heard-of-shape.pdf
    • http://www.gorillawalker.com/leadership-paradigms-in-chaplaincy.pdf
    • http://www.gorillawalker.com/foundations-of-cyclopean-perception.pdf
    • http://www.gorillawalker.com/critical-thinking-activities-in-patterns-imagery-logic-grades-4-6.pdf
    • http://www.gorillawalker.com/dark-secret-the-carpathians-dark-series-book-12.pdf
    • http://www.gorillawalker.com/the-making-of-karateka-kindle-edition.pdf
    • http://www.gorillawalker.com/unfinished-business-the-10-most-important-issues-women-face-today.pdf
    • http://www.gorillawalker.com/chemical-reaction-engineering-3rd-edition.pdf
    • http://www.gorillawalker.com/smooth-a-ruben-kane-novel-meet-ruben-kane-book-5.pdf
    • http://www.gorillawalker.com/afterglow.pdf
    • http://www.gorillawalker.com/the-kingdom-of-stones-son-of-time-volume-3.pdf
    • http://www.gorillawalker.com/visual-developer-vbscript-2-activex-programming-master-the-art-of.pdf
    • http://www.gorillawalker.com/the-power-of-place-the-problem-of-time-aboriginal-identity.pdf
    • http://www.gorillawalker.com/still-breathing.pdf
    • http://www.gorillawalker.com/roads-to-social-capitalism-theory-evidence-and-policy.pdf
    • http://www.gorillawalker.com/caught-in-the-web-dreaming-up-the-world-of-spider.pdf
    • http://www.gorillawalker.com/the-real-judo-160-things-you-did-not-know.pdf
    • http://www.gorillawalker.com/easybake-oven-gourmet.pdf
    • http://www.gorillawalker.com/nuclear-medicine-the-requisites-4e-requisites-in-radiology.pdf
    • http://www.gorillawalker.com/immigrants-webster-s-specialty-crossword-puzzles-volume-1-the-essentials.pdf
    • http://www.gorillawalker.com/the-little-rabbit-who-liked-to-say-moo.pdf
    • http://www.gorillawalker.com/san-antonio-spurs-inside-the-nba.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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