Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a61c82ccbd8442…

MALICIOUS

PDF

43.9 KB Created: 2018-11-14 11:29:58 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 7.0 (Windows))
MD5: 029bfd2f5ee6e29714a3c12ccc29b221 SHA-1: ca266a96471c6d1ecc5a8d8afb9992f892b2a108 SHA-256: 98a61c82ccbd8442325face7799486807bc35284acda2faaeafada11f1d6f2e1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. The document body itself is heavily obfuscated and does not provide clear textual content, but the presence of numerous links to PDFs on a single domain suggests a coordinated effort to direct users to external resources. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/neuropharmacology-of-ethanol-new-approaches.pdf
    • http://www.gorillawalker.com/modern-fluoroorganic-chemistry-synthesis-reactivity-applications.pdf
    • http://www.gorillawalker.com/thinking-spreadsheet-an-opinionated-guide-to-problem-solving-and-data.pdf
    • http://www.gorillawalker.com/chez-panisse-fruit-notecards.pdf
    • http://www.gorillawalker.com/this-or-that-animal-debate-a-rip-roaring-game-of.pdf
    • http://www.gorillawalker.com/the-cat-the-dog-little-red-the-exploding-eggs-the.pdf
    • http://www.gorillawalker.com/the-zohar-volume-ii-parashat-pinhas.pdf
    • http://www.gorillawalker.com/the-patient-s-voice-experiences-of-illness-1st-first-edition.pdf
    • http://www.gorillawalker.com/finfish-and-shellfish-bacteriology-manual-techniques-and-procedures.pdf
    • http://www.gorillawalker.com/rigby-on-our-way-to-english-big-book-grade-1.pdf
    • http://www.gorillawalker.com/from-bangkok-to-bombay-siam-french-indo-china-burma-hindustan.pdf
    • http://www.gorillawalker.com/treatise-on-invertebrate-paleontology-porifera-part-e-volume-2-introduction.pdf
    • http://www.gorillawalker.com/unten-im-keller-und-anderswo-roman-kinderschicksal-german-edition-kindle.pdf
    • http://www.gorillawalker.com/principles-of-european-law-volume-3-personal-security-contracts-european.pdf
    • http://www.gorillawalker.com/making-it-your-business-the-personal-transition-from-employee-to.pdf
    • http://www.gorillawalker.com/the-power-of-tank-girl.pdf
    • http://www.gorillawalker.com/math-practice-grades-6-8-the-100-series-tm.pdf
    • http://www.gorillawalker.com/computer-animation-kaleidoscope.pdf
    • http://www.gorillawalker.com/brad-kauzlaric-the-life-works-of-a-pacific-northwest-artist.pdf
    • http://www.gorillawalker.com/creative-haven-beautiful-birds-coloring-book.pdf
    • http://www.gorillawalker.com/sharpen-your-report-writing-skills-sharpen-your-writing-skills.pdf
    • http://www.gorillawalker.com/pilot-down-presumed-dead-special-illustrated-edition.pdf
    • http://www.gorillawalker.com/germany-s-new-security-demographics-military-recruitment-in-the-era.pdf
    • http://www.gorillawalker.com/everything-you-need-to-know-about-nursing-homes-the-family.pdf
    • http://www.gorillawalker.com/auto-body-repair-technology-fourth-edition.pdf
    • http://www.gorillawalker.com/from-the-ship-to-the-marine-engineering-paperback.pdf
    • http://www.gorillawalker.com/a-simple-song-from-mass-sheet-music.pdf
    • http://www.gorillawalker.com/ahora-hablo-medical-edition-simple-steps-to-communicate-with-spanish.pdf
    • http://www.gorillawalker.com/global-marketing-sixth-edition-instructor-s-copy.pdf
    • http://www.gorillawalker.com/coping-better-anytime-anywhere-the-handbook-of-rational-self-counseling.pdf
    • http://www.gorillawalker.com/infinite-tropics-an-alfred-russel-wallace-anthology.pdf
    • http://www.gorillawalker.com/the-army-and-democracy-military-politics-in-pakistan.pdf
    • http://www.gorillawalker.com/fishing-with-traps-and-pots-fao-training-series.pdf
    • http://www.gorillawalker.com/the-missional-church-in-perspective-mapping-trends-and-shaping-the.pdf
    • http://www.gorillawalker.com/coming-to-birth-women-writing-africa.pdf
    • http://www.gorillawalker.com/pide-otra-pizza-por-favor-order-another-pizza-please-gran.pdf
    • http://www.gorillawalker.com/counterinsurgency-in-modern-warfare-companion.pdf
    • http://www.gorillawalker.com/victimproof-the-student-s-guide-to-end-bullying-america-s.pdf
    • http://www.gorillawalker.com/journal-of-gastroenterology-and-hepatology.pdf
    • http://www.gorillawalker.com/ruby-shadows-born-to-darkness.pdf
    • http://www.gorillawalker.com/the-patient-s-voice-experiences-of-illness-1st-firs
    • 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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