Malicious PDF — malware analysis report

Static analysis result for SHA-256 b71ec3fc00036881…

MALICIOUS

PDF

32.9 KB Created: 2020-01-03 01:18:31 +03:00 Authoring application: TeX (via MiKTeX pdfTeX-1.40.9)
MD5: 254687fad2d687a32337726426e07e8c SHA-1: 1586ec34fa85d4a1846a50b0bc5460a8ab6b5c68 SHA-256: b71ec3fc00036881cb862fccf1e1169a005490a97187b3b1a7ad070475da9698
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a machine learning classifier and contains a large number of embedded URLs pointing to external websites. The heuristic 'PDF_SEO_LINK_FARM' indicates that the document is designed to link to many external PDFs, likely for SEO manipulation or to serve as a landing page for malicious content. No scripts were extracted from this sample, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/legalines-on-contracts-7th-keyed-to-ayres.pdf
    • http://www.gorillawalker.com/longman-dizionario-compatto-english-italian-secondary-beginner-intermediate-dictionary-and.pdf
    • http://www.gorillawalker.com/a-paper-cocoon-kindle-edition.pdf
    • http://www.gorillawalker.com/l8r-g8r-internet-girls.pdf
    • http://www.gorillawalker.com/atomic-collisions-and-spectra.pdf
    • http://www.gorillawalker.com/the-catty-cookie-cookbook-1.pdf
    • http://www.gorillawalker.com/kidnap-for-ransom-resolving-the-unthinkable.pdf
    • http://www.gorillawalker.com/college-costs-volume-3.pdf
    • http://www.gorillawalker.com/mechanics-of-residual-soils-second-edition.pdf
    • http://www.gorillawalker.com/rudyard-kipling-and-sir-henry-rider-haggard-on-screen-stage.pdf
    • http://www.gorillawalker.com/a-brief-history-of-thought-a-philosophical-guide-to-living.pdf
    • http://www.gorillawalker.com/the-parlour-and-the-streets-elite-and-popular-culture-in.pdf
    • http://www.gorillawalker.com/star-wars-legacy-volume-9-monster.pdf
    • http://www.gorillawalker.com/21-cfr-part-11-compliance-including-qualification-of-scada-systems.pdf
    • http://www.gorillawalker.com/the-portal.pdf
    • http://www.gorillawalker.com/money-and-the-space-economy.pdf
    • http://www.gorillawalker.com/beneath-him-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/stonyfield-farm-yogurt-cookbook.pdf
    • http://www.gorillawalker.com/return-to-bull-run.pdf
    • http://www.gorillawalker.com/the-rahmani-of-m-p-kunhikunhi-malmi-of-kavaratti-a.pdf
    • http://www.gorillawalker.com/model-centered-learning-pathways-to-mathematical-understanding-using-geogebra.pdf
    • http://www.gorillawalker.com/organic-whole-wheat-olive-oil-pinneapple-upside-down-cake-recipe.pdf
    • http://www.gorillawalker.com/new-diet-for-the-x-15-engine-sae.pdf
    • http://www.gorillawalker.com/critical-thinking-about-psychology-hidden-assumptions-and-plausible-alternatives.pdf
    • http://www.gorillawalker.com/bye-bye-big-bad-bullybug.pdf
    • http://www.gorillawalker.com/the-avid-handbook-intermediate-techniques-strategies-and-survival-information-for.pdf
    • http://www.gorillawalker.com/the-fragmentary-latin-poets.pdf
    • http://www.gorillawalker.com/the-backward-day.pdf
    • http://www.gorillawalker.com/leadership-gender-and-organization-issues-in-business-ethics.pdf
    • http://www.gorillawalker.com/how-my-parents-learned-to-eat-sandpiper-houghton-mifflin-books.pdf
    • http://www.gorillawalker.com/a-color-atlas-of-otorhinolaryngology.pdf
    • http://www.gorillawalker.com/electric-filters-artech-house-microwave-library.pdf
    • http://www.gorillawalker.com/industrial-strength-when-all-the-wares-are-soft-gigglebytes-humor.pdf
    • http://www.gorillawalker.com/the-tutankhamun-prophecies-the-sacred-secret-of-the-maya-egyptians.pdf
    • http://www.gorillawalker.com/20-minute-dietwalk.pdf
    • http://www.gorillawalker.com/the-lifeguard-point-horror-kindle-edition.pdf
    • http://www.gorillawalker.com/chinese-music-and-musical-instruments.pdf
    • http://www.gorillawalker.com/ec-and-wto-anti-dumping-law-a-handbook.pdf
    • http://www.gorillawalker.com/groupware-workflow-and-intranets-re-engineering-the-enterprise-with-collaborative.pdf
    • http://www.gorillawalker.com/winning-legal-strategies-for-biotech-companies-intellectual-property-protection-fda.pdf
    • http://www.goril
    • 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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