Malicious PDF — malware analysis report

Static analysis result for SHA-256 264b737f88b57b99…

MALICIOUS

PDF

43.1 KB Created: 2019-03-17 08:20:28 +03:00 Authoring application: PScript5.dll Version 5.2 (via Acrobat Distiller 6.0 (Windows))
MD5: adb1e082b155e24c417603934ee9fb37 SHA-1: ddbfa42fd39a1482b84c6cdc793ea45d02bea094 SHA-256: 264b737f88b57b991ddb29785835cb7d68578b56d9b236771c0b62d999eea51b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a deeper analysis of its specific intent beyond link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/children-clay-and-sculpture.pdf
    • http://www.gorillawalker.com/dave-barry-is-from-mars-and-venus-abridged-audible-audio.pdf
    • http://www.gorillawalker.com/ways-of-looking-how-to-experience-contemporary-art.pdf
    • http://www.gorillawalker.com/out-on-the-wire.pdf
    • http://www.gorillawalker.com/beautiful-alberta.pdf
    • http://www.gorillawalker.com/electric-vehicle-batteries-moving-from-research-towards-innovation-reports-of.pdf
    • http://www.gorillawalker.com/hong-kong-on-the-move-10-years-as-the-hksar.pdf
    • http://www.gorillawalker.com/alice-in-wonderland-music-from-the-motion-picture-soundtrack.pdf
    • http://www.gorillawalker.com/11-simple-steps-to-writing-designing-self-publishing-marketing-your.pdf
    • http://www.gorillawalker.com/formation-in-holiness-thomas-aquinas-on-sacra-doctrina-thomas-instituut.pdf
    • http://www.gorillawalker.com/value-at-risk-the-new-benchmark-for-managing-financial-risk.pdf
    • http://www.gorillawalker.com/fatal-flaws-what-evolutionists-don-t-want-you-to-know.pdf
    • http://www.gorillawalker.com/muscle-pain-relief-in-90-seconds-the-fold-and-hold.pdf
    • http://www.gorillawalker.com/solar-and-switching-materials-proceedings-of-spie.pdf
    • http://www.gorillawalker.com/parlor-politics-in-which-the-ladies-of-washington-help-build.pdf
    • http://www.gorillawalker.com/eat-dangerously.pdf
    • http://www.gorillawalker.com/electronic-atlas-of-parasitology-cd-rom.pdf
    • http://www.gorillawalker.com/twisted-sister.pdf
    • http://www.gorillawalker.com/the-story-of-the-amistad.pdf
    • http://www.gorillawalker.com/hamlet-easton-press-leather-edition.pdf
    • http://www.gorillawalker.com/inordinately-strange-life-of-dyce-sombre-victorian-anglo-indian-mp.pdf
    • http://www.gorillawalker.com/the-station.pdf
    • http://www.gorillawalker.com/tennis-physical-education-activites-series.pdf
    • http://www.gorillawalker.com/the-library-collaboration-and-flexible-scheduling-toolkit-everything-you-need.pdf
    • http://www.gorillawalker.com/disaster-management-and-human-health-risk-ii-wit-transactions.pdf
    • http://www.gorillawalker.com/prentice-hall-science-explorer-inside-earth-student-edition-third-edition.pdf
    • http://www.gorillawalker.com/costa-rica-travel-guide-best-of-margaritaville-2015-quepos-manuel.pdf
    • http://www.gorillawalker.com/outsourcing-and-offshoring-of-the-21st-century-socioeconomic-perspective-chinese.pdf
    • http://www.gorillawalker.com/the-ultimate-guide-to-colored-pencil-over-40-step-by.pdf
    • http://www.gorillawalker.com/the-occupational-therapist-s-handbook-for-inclusive-school-practices.pdf
    • http://www.gorillawalker.com/fish.pdf
    • http://www.gorillawalker.com/the-digging-est-dog-beginner-books-r.pdf
    • http://www.gorillawalker.com/promise-and-power-the-life-and-times-of-robert-mcnamara.pdf
    • http://www.gorillawalker.com/java-servlets-jsp.pdf
    • http://www.gorillawalker.com/mona-lisa-reimagined.pdf
    • http://www.gorillawalker.com/wholeness-on-education-buckminster-fuller-and-tao.pdf
    • http://www.gorillawalker.com/spheres-of-justice-a-defense-of-pluralism-and-equality.pdf
    • http://www.gorillawalker.com/malediction-an-old-world-story.pdf
    • http://www.gorillawalker.com/the-camera-never-lies-hometown-mysteries.pdf
    • http://www.gorillawalker.com/regulation-of-pharmaceutical-manufacturers-regulatory-series.pdf
    • http://www.gorillawalker.com/electric-vehicle-batteries-moving-from-research-towards-innovation-reports-o
    • 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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