Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b3c21b5f5e98e1…

MALICIOUS

PDF

42.9 KB Created: 2019-01-06 08:24:37 +03:00 Authoring application: Acrobat PDFMaker 5.0 for Word (via Acrobat Distiller 5.0.5 (Windows))
MD5: f5f6ee98e9b593e42e47113c284bed07 SHA-1: fad6e73266c054b17bd679ca1f2f36124c8b6857 SHA-256: f8b3c21b5f5e98e1e427629e78101140d7e58fb7439fccabd38a4d56cc31e913
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. The embedded URLs are all hosted on the same domain, suggesting a coordinated effort to manipulate search engine results or distribute content from a central location. No scripts were extracted from this sample.

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/conference-on-newer-respiratory-disease-viruses-national-institutes-of-health.pdf
    • http://www.gorillawalker.com/sat-power-cambridge-review.pdf
    • http://www.gorillawalker.com/the-secrets-to-sensational-foreplay-the-hottest-ways-to-touch.pdf
    • http://www.gorillawalker.com/studies-in-early-victorian-literature.pdf
    • http://www.gorillawalker.com/hospice-volunteer-coordinators-manual.pdf
    • http://www.gorillawalker.com/annual-editions-educational-psychology-28-e.pdf
    • http://www.gorillawalker.com/america-latina-etnodesarrollo-y-etnocidio-coleccion-25-aniversario-spanish-edition.pdf
    • http://www.gorillawalker.com/rosewater-movie-tie-in-edition-a-family-s-story-of.pdf
    • http://www.gorillawalker.com/radical-right-voters-and-parties-in-the-electoral-market.pdf
    • http://www.gorillawalker.com/twenty-one-poems.pdf
    • http://www.gorillawalker.com/an-uncommon-scold.pdf
    • http://www.gorillawalker.com/red-hat-linux-7-server.pdf
    • http://www.gorillawalker.com/food-beverage-market-place-2015-food-and-beverage-market-place.pdf
    • http://www.gorillawalker.com/the-holy-spirit-activating-god-s-power-in-your-life.pdf
    • http://www.gorillawalker.com/scottish-miscellany-everything-you-always-wanted-to-know-about-scotland.pdf
    • http://www.gorillawalker.com/scotland-the-best-the-guide-scots-trust-collins.pdf
    • http://www.gorillawalker.com/private-label-profits-the-beginners-guide-to-selling-your-own.pdf
    • http://www.gorillawalker.com/polyphase-electric-currents-and-alternate-current-motors.pdf
    • http://www.gorillawalker.com/approved-european-property-valuation-standards.pdf
    • http://www.gorillawalker.com/knowing-the-love-of-christ-an-introduction-to-the-theology.pdf
    • http://www.gorillawalker.com/introduction-to-quantum-hall-effect.pdf
    • http://www.gorillawalker.com/betting-on-biotech-innovation-and-the-limits-of-asia-s.pdf
    • http://www.gorillawalker.com/the-scottish-heather-book.pdf
    • http://www.gorillawalker.com/international-economics-a-policy-approach.pdf
    • http://www.gorillawalker.com/super-studies-26-progressive-studies-trombone-b-c-and-t.pdf
    • http://www.gorillawalker.com/innovative-shear-design-structural-engineering-mechanics-and-design.pdf
    • http://www.gorillawalker.com/the-cigarette-monster.pdf
    • http://www.gorillawalker.com/every-body-s-talking-what-we-say-without-words-nonfiction.pdf
    • http://www.gorillawalker.com/storytown-practice-book-student-edition-grade-4.pdf
    • http://www.gorillawalker.com/a-road-is-made-communism-in-shanghai-1920-1927.pdf
    • http://www.gorillawalker.com/classic-cuban-cookery.pdf
    • http://www.gorillawalker.com/grammar-explorer-1-audio-cd.pdf
    • http://www.gorillawalker.com/allgemeine-relativit-tstheorie-und-relativistische-astrophysik-lecture-notes-in-physics.pdf
    • http://www.gorillawalker.com/preaching-as-image-story-and-idea-sermons-that-work-vii.pdf
    • http://www.gorillawalker.com/their-unusual-mating-paranormal-protection-unit-5-siren-publishing-classic.pdf
    • http://www.gorillawalker.com/tabiya-tournament-chess-scorebook-cover-style-red.pdf
    • http://www.gorillawalker.com/complete-mesillat-yesharim-heb-bound.pdf
    • http://www.gorillawalker.com/clymer-yamaha-fz700-fz750-fazer-1985-1987.pdf
    • http://www.gorillawalker.com/classical-electricity-and-magnetism-second-edition-dover-books-on-physics.pdf
    • http://www.gorillawalker.com/the-land-of-the-midnight-sun-summer-and-winter-journeys.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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