Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab4cae58a38f1c3…

MALICIOUS

PDF

45.2 KB Created: 2018-12-15 08:52:56 +03:00 Authoring application: Acrobat PDFMaker 9.1 для Word (via Adobe PDF Library 9.0)
MD5: 4247a5d63540115f43c1741d234db761 SHA-1: c7b0a46a2af9816a49d55fe27ad806401c79aa13 SHA-256: aab4cae58a38f1c3b1f01ac7fe0884974304541d70bf2a9e38b109b667ddffcd
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 classifier also flagged this PDF as malicious. The embedded URLs are likely used to redirect users to potentially malicious content or to manipulate search engine rankings. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8812

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/flight-of-the-bumble-bee-for-clarinet-and-piano.pdf
    • http://www.gorillawalker.com/java-complete-reference-for-the-really-impatient.pdf
    • http://www.gorillawalker.com/the-nemesis-file-the-true-story-of-an-sas-execution.pdf
    • http://www.gorillawalker.com/cocina-para-singles-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/steck-vaughn-comprehension-skill-books-student-edition-facts.pdf
    • http://www.gorillawalker.com/la-promesa-de-gertruda-plataforma-testimonio-spanish-edition.pdf
    • http://www.gorillawalker.com/building-business-websites-for-squarespace.pdf
    • http://www.gorillawalker.com/210-egg-recipes-the-big-egg-cookbook-egg-cookbook-egg.pdf
    • http://www.gorillawalker.com/zen-and-the-art-of-sleep.pdf
    • http://www.gorillawalker.com/dermoscopy-an-illustrated-self-assessment-guide.pdf
    • http://www.gorillawalker.com/brad-thor-collectors-edition-4-the-athena-project-full-black.pdf
    • http://www.gorillawalker.com/controlling-carly.pdf
    • http://www.gorillawalker.com/royal-copenhagen-porcelain.pdf
    • http://www.gorillawalker.com/instructor-s-manual-to-accompany-historical-geology-evolution-of-the.pdf
    • http://www.gorillawalker.com/agony-of-a-child.pdf
    • http://www.gorillawalker.com/best-buy-bargain-plus-word-games-puzzles-and-more-grade.pdf
    • http://www.gorillawalker.com/the-fashion-designer-s-directory-of-shape-and-style-over.pdf
    • http://www.gorillawalker.com/participatory-planning-of-sustainable-development-projects-a-practical-guide-for.pdf
    • http://www.gorillawalker.com/share-the-music.pdf
    • http://www.gorillawalker.com/logistics-warehousing-and-distribution-management.pdf
    • http://www.gorillawalker.com/person-centered-care-for-mental-illness-the-evolution-of-adherence.pdf
    • http://www.gorillawalker.com/legal-services-corporation-general-oversight-hearing-before-the-subcommittee-on.pdf
    • http://www.gorillawalker.com/the-whole-truth-whole-grains-labeling-cover-story-an-article.pdf
    • http://www.gorillawalker.com/after-live-theater-theory-text-performance.pdf
    • http://www.gorillawalker.com/ceska-republika-autoatlas-1-250-000-tschechische-republik-autoatlas-czech.pdf
    • http://www.gorillawalker.com/baseball-and-the-american-legal-mind.pdf
    • http://www.gorillawalker.com/gideon-power-from-weakness-character-charisma.pdf
    • http://www.gorillawalker.com/foundations-of-parasitology-by-roberts-larry-janovy-jr-john-schmidt.pdf
    • http://www.gorillawalker.com/funding-civil-society-foreign-assistance-and-ngo-development-in-russia.pdf
    • http://www.gorillawalker.com/wrap-it-up-making-sensational-all-occasion-wrap-breads-at.pdf
    • http://www.gorillawalker.com/elements-of-literature-1st-course-grade-7.pdf
    • http://www.gorillawalker.com/international-law-of-take-overs-and-mergers-southern-europe-africa.pdf
    • http://www.gorillawalker.com/blackheart-man-a-journey-into-rasta.pdf
    • http://www.gorillawalker.com/contemporary-japan-history-politics-and-social-change-since-the-1980s.pdf
    • http://www.gorillawalker.com/infections-associated-with-indwelling-medical-devices.pdf
    • http://www.gorillawalker.com/zombie-art-2016-calendar.pdf
    • http://www.gorillawalker.com/a-shot-at-forever-kindle-edition.pdf
    • http://www.gorillawalker.com/feminized-hypnotic-revenge-feminization-fables-book-3-kindle-edition.pdf
    • http://www.gorillawalker.com/films-famous-fanciful-frolicsome-fantastic-classic-movies-from-cinema-s.pdf
    • http://www.gorillawalker.com/hidden-world-of-the-aztec-ancient-civilizations-of-the-americas.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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