Malicious PDF — malware analysis report

Static analysis result for SHA-256 598bea541791b57d…

MALICIOUS

PDF

41.6 KB Created: 2019-03-17 06:56:28 +03:00 Authoring application: AdobePS5.dll Version 5.0.1 (via Acrobat Distiller 4.0 for Windows)
MD5: dc4f3265fe9ca00cdc506bce2af1c24b SHA-1: 4b1fa53ce9333645efd834a69930656050f2a930 SHA-256: 598bea541791b57de719b6f607bbba4a293f2d9da916946451d34ed546ea2928
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files on the domain gorillawalker.com. The document body is heavily obfuscated and does not provide clear textual lures. The primary function appears to be directing users to a link farm, likely for SEO manipulation or to serve as a distribution point for other malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9239

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/minecraft-flash-and-bones-and-the-wild-west-frontier-real.pdf
    • http://www.gorillawalker.com/the-eye-of-the-world-the-graphic-novel-volume-two.pdf
    • http://www.gorillawalker.com/ladby-a-danish-ship-grave-from-the-viking-age-ships.pdf
    • http://www.gorillawalker.com/issues-of-life-and-death-access-to-religion-and-philosophy.pdf
    • http://www.gorillawalker.com/dr-virgil-hart-man-on-a-mission.pdf
    • http://www.gorillawalker.com/activism-and-lgbt-psychology-journal-of-gay-lesbian-psychotherapy-1st.pdf
    • http://www.gorillawalker.com/inside-the-pakistan-army.pdf
    • http://www.gorillawalker.com/beta-alpha-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/flitcraft-compend-listing-most-prominent-life-insurance-companies-volume-5.pdf
    • http://www.gorillawalker.com/the-infinitesimals-digital.pdf
    • http://www.gorillawalker.com/matt-smith-s-chop-shop-for-guitar-creative-tools-and.pdf
    • http://www.gorillawalker.com/the-cool-impossible-the-coach-from-born-to-run-shows.pdf
    • http://www.gorillawalker.com/ultimate-vocal-voyage-bk-cd.pdf
    • http://www.gorillawalker.com/frommer-s-96-san-francisco-frommers-complete-city-guide.pdf
    • http://www.gorillawalker.com/race-to-the-sky-the-wright-brothers-versus-the-united.pdf
    • http://www.gorillawalker.com/stream-ecology-structure-and-function-of-running-waters.pdf
    • http://www.gorillawalker.com/atlas-of-neonatology-a-companion-to-avery-s-diseases-of.pdf
    • http://www.gorillawalker.com/one-day-in-the-life-of-ivan-denisovitch-cliffs-notes.pdf
    • http://www.gorillawalker.com/coal-handbook-energy-power-environment-series.pdf
    • http://www.gorillawalker.com/ends-of-the-earth-land-art-to-1974.pdf
    • http://www.gorillawalker.com/chaser-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/demings-road-to-continual-improvement.pdf
    • http://www.gorillawalker.com/speech-act-theory-and-pragmatics-studies-in-linguistics-and-philosophy.pdf
    • http://www.gorillawalker.com/orestes-greek-tragedy-in-new-translations.pdf
    • http://www.gorillawalker.com/producing-great-sound-for-film-and-video-dv-expert-series.pdf
    • http://www.gorillawalker.com/geological-map-of-cyprus-unknown-binding.pdf
    • http://www.gorillawalker.com/only-the-strong-survive-memoirs-of-a-soul-survivor-black.pdf
    • http://www.gorillawalker.com/leninism-under-lenin.pdf
    • http://www.gorillawalker.com/immediate-fiction-a-complete-writing-course.pdf
    • http://www.gorillawalker.com/applied-gas-dynamics.pdf
    • http://www.gorillawalker.com/advances-in-gamma-ray-resonant-scattering-and-absorption-long-lived.pdf
    • http://www.gorillawalker.com/cheerleading-fun-sports-for-fitness-level-o.pdf
    • http://www.gorillawalker.com/a-history-of-the-democratic-party-votes-america.pdf
    • http://www.gorillawalker.com/funk-wagnalls-new-encyclopedia-vol-5.pdf
    • http://www.gorillawalker.com/the-hardest-peace-expecting-grace-in-the-midst-of-life.pdf
    • http://www.gorillawalker.com/symphony-no-2-in-d-major-op-73-movement-1.pdf
    • http://www.gorillawalker.com/selenium-webdriver-practical-guide-automated-testing-for-web-applications.pdf
    • http://www.gorillawalker.com/nagasaki-1945-the-first-full-length-eyewitness-account-of-the.pdf
    • http://www.gorillawalker.com/the-eb-5-handbook-a-guide-for-investors-and-developers.pdf
    • http://www.gorillawalker.com/not-just-a-passing-phase.pdf
    • http://www.gorillawalker.com/activism-and-lgbt-psychology-j
    • 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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