Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e54804cf4011dd8…

MALICIOUS

PDF

41.9 KB Created: 2018-12-14 20:37:56 +03:00 Authoring application: Acrobat PDFMaker 10.0 for Word (via Adobe PDF Library 10.0)
MD5: 9b873bb4636967aadccd8cd11d191e65 SHA-1: ca403671ddd818e4fdee8b61659d6c94abbf8b47 SHA-256: 9e54804cf4011dd89f8f02529d2f55f9139be4d63360a42872e452b3b02f09b2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 document as malicious. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a non-standard purpose, likely related to SEO manipulation or hosting further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/strategic-management-competitiveness-and-globalization-concepts-and-cases-4th-edition.pdf
    • http://www.gorillawalker.com/public-and-private-science-the-king-george-iii-collection.pdf
    • http://www.gorillawalker.com/black-mosaic-the-politics-of-black-pan-ethnic-diversity.pdf
    • http://www.gorillawalker.com/bishop-gerasimos-of-abydos-the-spiritual-elder-of-america.pdf
    • http://www.gorillawalker.com/high-temperature-superconductivity-proceedings-the-los-alamos-symposium-1989.pdf
    • http://www.gorillawalker.com/the-book-of-grace-volume-i-the-lost-pages.pdf
    • http://www.gorillawalker.com/minnesota-s-own-preserving-our-grand-homes.pdf
    • http://www.gorillawalker.com/geochemistry-of-colloid-systems-for-earth-scientists.pdf
    • http://www.gorillawalker.com/the-mother-and-the-father.pdf
    • http://www.gorillawalker.com/bluford-high-12-shattered.pdf
    • http://www.gorillawalker.com/the-blue-laser-diode-gan-based-light-emitters-and-lasers.pdf
    • http://www.gorillawalker.com/ret-rate-joven-y-rico-rich-dad-spanish-edition.pdf
    • http://www.gorillawalker.com/annual-editions-archaeology-11-e.pdf
    • http://www.gorillawalker.com/philippians-colossians-philemon-the-new-american-commentary-vol-32.pdf
    • http://www.gorillawalker.com/inyo-county-california-including-its-history-the-death-valley-national.pdf
    • http://www.gorillawalker.com/introduction-to-vlsi-system.pdf
    • http://www.gorillawalker.com/running-out-of-night.pdf
    • http://www.gorillawalker.com/fivefold-symmetry.pdf
    • http://www.gorillawalker.com/training-manual-2180-5-topography-surveying-map-aerial-photography-reading.pdf
    • http://www.gorillawalker.com/invasion-the-dutch-in-wartime-survivors-remember.pdf
    • http://www.gorillawalker.com/andromaque-overture-oboe-1-part-qty-4-a7268.pdf
    • http://www.gorillawalker.com/dorotea-dhe-syzet-dorothy-and-the-glasses-albanian-edition.pdf
    • http://www.gorillawalker.com/post-mortem-solving-history-s-great-medical-mysteries.pdf
    • http://www.gorillawalker.com/believing-bishops.pdf
    • http://www.gorillawalker.com/travel-tips-portugal-unknown-binding.pdf
    • http://www.gorillawalker.com/the-israeli-islamic-war-an-exciting-combat-story-of-a.pdf
    • http://www.gorillawalker.com/beyond-einstein-and-e-mc2.pdf
    • http://www.gorillawalker.com/the-discovery-of-subatomic-particles.pdf
    • http://www.gorillawalker.com/vegan-a-way-of-life-by-stuart-hampton.pdf
    • http://www.gorillawalker.com/understanding-the-prophets-and-their-books.pdf
    • http://www.gorillawalker.com/law-and-mental-health-major-developments.pdf
    • http://www.gorillawalker.com/empty-cradles.pdf
    • http://www.gorillawalker.com/explorers-of-australia.pdf
    • http://www.gorillawalker.com/being-the-best-you-can-be-in-mlm-how-to.pdf
    • http://www.gorillawalker.com/defeated-by-love-brothers-in-arms-book-11.pdf
    • http://www.gorillawalker.com/my-arctic-journal.pdf
    • http://www.gorillawalker.com/watching-what-we-eat-the-evolution-of-television-cooking-shows.pdf
    • http://www.gorillawalker.com/4-airs-de-ballet-romance-no-1-trombone-1-part.pdf
    • http://www.gorillawalker.com/cailyn-and-chloe-learn-about-conjunctions-language-builders.pdf
    • http://www.gorillawalker.com/the-practical-zone-system-for-film-and-digital-photography-classic.pdf
    • http://www.gorillawalker.com/high-tempe
    • 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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