Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b4247e1e79128e…

MALICIOUS

PDF

35.2 KB Created: 2020-01-17 19:19:47 +03:00 Authoring application: TeX (via pdfTeX-1.40.17)
MD5: 1b628d12c8f9c40c6862d90874981274 SHA-1: 125af330410feba336671737457b96c7bb6a2f2e SHA-256: 65b4247e1e79128ebd821914744d60e3061ebb53b8a24168133131335bcb9d05
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.8018

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/the-river-flows-on-black-resistance-culture-and-identity-formation.pdf
    • http://www.gorillawalker.com/loe-bar-and-the-sandhill-rustic-moth-the-biogeography-ecology.pdf
    • http://www.gorillawalker.com/teach-yourself-to-swim-like-a-pro-in-one-minute.pdf
    • http://www.gorillawalker.com/history-of-indian-literature-vol-2-buddhist-jain-literature.pdf
    • http://www.gorillawalker.com/atlas-of-the-textural-patterns-of-metamorphosed-transformed-and-deformed.pdf
    • http://www.gorillawalker.com/the-really-really-classy-donald-trump-quiz-book-complete-unauthorized.pdf
    • http://www.gorillawalker.com/harrap-s-unabridged-french-to-english-dictionary-harrap-dictionnaire-francais.pdf
    • http://www.gorillawalker.com/parabolas-of-science-fiction.pdf
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    • http://www.gorillawalker.com/reaching-olympus-the-greek-myths-tales-of-titans-gods-and.pdf
    • http://www.gorillawalker.com/bleak-house-with-ebook-tantor-unabridged-classics.pdf
    • http://www.gorillawalker.com/porsche-high-performance-driving-handbook.pdf
    • http://www.gorillawalker.com/castles-crown-s-spies-book-4-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/shadows-in-the-fire-thorndike-large-print-western-series.pdf
    • http://www.gorillawalker.com/the-still-point-reflections-on-zen-and-christian-mysticism.pdf
    • http://www.gorillawalker.com/variable-speed-pumping-a-guide-to-successful-applications.pdf
    • http://www.gorillawalker.com/many-waters.pdf
    • http://www.gorillawalker.com/awful-splendour-a-fire-history-of-canada-nature-history-society.pdf
    • http://www.gorillawalker.com/masteringa-p-with-pearson-etext-standalone-access-card-for-human.pdf
    • http://www.gorillawalker.com/microscale-miniscale-organic-chemistry-laboratory-experiments-2nd-edition.pdf
    • http://www.gorillawalker.com/soil-science-laboratory-manual.pdf
    • http://www.gorillawalker.com/the-physics-of-laser-atom-interactions-cambridge-studies-in-modern.pdf
    • http://www.gorillawalker.com/simplified-lrfd-bridge-design.pdf
    • http://www.gorillawalker.com/the-middle-of-everywhere-helping-refugees-enter-the-american-community.pdf
    • http://www.gorillawalker.com/dating-the-tombs-of-the-egyptian-old-kingdom-archaeopress-egyptology.pdf
    • http://www.gorillawalker.com/the-golden-keel-the-vivero-letter.pdf
    • http://www.gorillawalker.com/the-iconography-of-manhattan-island-1498-1909-compiled-from-original.pdf
    • http://www.gorillawalker.com/untersuchungen-ber-die-m-glichkeit-die-frequenz-von-ultraschallpfeifen-elektronisch.pdf
    • http://www.gorillawalker.com/the-translation-of-han.pdf
    • http://www.gorillawalker.com/hotwife-cuckold-in-chastity-he-watches-his-femdom-wife-get.pdf
    • http://www.gorillawalker.com/the-fodmap-solution-a-low-fodmap-diet-plan-and-cookbook.pdf
    • http://www.gorillawalker.com/the-concept-of-man-in-the-advaita-vedanta-of-sankara.pdf
    • http://www.gorillawalker.com/the-wedding-one-night-with-the-prince-a-bonus-chapter.pdf
    • http://www.gorillawalker.com/partitas-i-iii-bwv-825-827-signature-series-abrsm.pdf
    • http://www.gorillawalker.com/doctor-nice.pdf
    • http://www.gorillawalker.com/cosmic-evolution-the-rise-of-complexity-in-nature.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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