Malicious PDF — malware analysis report

Static analysis result for SHA-256 c83aad1c358df3aa…

MALICIOUS

PDF

44.7 KB Created: 2018-12-28 08:08:47 +03:00 Authoring application: Adobe Illustrator CS2 (via Adobe PDF library 7.77)
MD5: 6eb61f6e3989be49c1020ff0ab56d835 SHA-1: 6b32c69f30868560e611bdd0089c9af680cef330 SHA-256: c83aad1c358df3aa623351db536d40e058368fa3e91efd06edc475687bfc19ec
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and a critical heuristic for containing a large number of external links. The embedded URLs point to various documents on the 'gorillawalker.com' domain, suggesting a link farm or redirection scheme. No scripts were extracted, and the document body contained mostly binary data and URL references. The primary attack pattern appears to be the distribution of numerous links, potentially to lure users to malicious sites or for SEO poisoning.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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/shadow-tracker.pdf
    • http://www.gorillawalker.com/takeout-food-wine-the-pairing-guide-kindle-edition.pdf
    • http://www.gorillawalker.com/the-lord-of-the-rings-instrumental-solos-for-strings-viola.pdf
    • http://www.gorillawalker.com/consuming-behaviours-identity-politics-and-pleasure-in-twentieth-century-britain.pdf
    • http://www.gorillawalker.com/the-mystery-of-edwin-drood-penguin-classics.pdf
    • http://www.gorillawalker.com/time-out-1000-songs-to-change-your-life.pdf
    • http://www.gorillawalker.com/hamfist-over-hanoi-wolfpack-on-the-prowl-the-air-combat.pdf
    • http://www.gorillawalker.com/that-s-not-english-britishisms-americanisms-and-what-our-english.pdf
    • http://www.gorillawalker.com/transforming-power-biblical-strategies-for-making-a-difference-in-your.pdf
    • http://www.gorillawalker.com/angel-et-faith-t03-r-union-de-famille-french-edition.pdf
    • http://www.gorillawalker.com/saul.pdf
    • http://www.gorillawalker.com/qian-jia-shi-quan-yi-mandarin-chinese-edition.pdf
    • http://www.gorillawalker.com/nightmare-abbey-classic-gothic-fiction.pdf
    • http://www.gorillawalker.com/writing-in-flow.pdf
    • http://www.gorillawalker.com/catalogue-de-la-collection-de-m-meynier-saint-fal-miniatures.pdf
    • http://www.gorillawalker.com/collectanea-volume-47-romanian-edition.pdf
    • http://www.gorillawalker.com/be-a-successful-remodeling-contractor.pdf
    • http://www.gorillawalker.com/marilyn-bridges-markings.pdf
    • http://www.gorillawalker.com/washington-irving-s-the-legend-of-sleepy-hollow-a-play.pdf
    • http://www.gorillawalker.com/take-the-a-train-choral-suite-satb.pdf
    • http://www.gorillawalker.com/ensemble-methods-in-data-mining-improving-accuracy-through-combining-predictions.pdf
    • http://www.gorillawalker.com/emily-posts-the-etiquette-advantage-in-business-personal-skills-for.pdf
    • http://www.gorillawalker.com/tom-clancy-s-power-plays-wild-card.pdf
    • http://www.gorillawalker.com/you-wouldn-t-like-it-here-a-guide-to-the.pdf
    • http://www.gorillawalker.com/jfk-a-e-biography.pdf
    • http://www.gorillawalker.com/the-pathfinder-psychic-talking-board-kit.pdf
    • http://www.gorillawalker.com/aircraft-welding-spot-welding-of-aluminum-alloys-pamphlet-no-22.pdf
    • http://www.gorillawalker.com/lubkin-s-chronic-illness-impact-and-intervention-lubkin-chronic-illness.pdf
    • http://www.gorillawalker.com/the-poetics-of-dna-posthumanities.pdf
    • http://www.gorillawalker.com/net-e-commerce-programming-with-cdrom.pdf
    • http://www.gorillawalker.com/electron-micrographs-of-erythrocytes-from-swiss-albino-mice-infected-with.pdf
    • http://www.gorillawalker.com/rihanna-superstars-of-hip-hop.pdf
    • http://www.gorillawalker.com/comparative-anatomy-and-histology-a-mouse-and-human-atlas-expert.pdf
    • http://www.gorillawalker.com/sexy-photo-book-for-adults-a-college-sorority-girl-s.pdf
    • http://www.gorillawalker.com/student-solutions-manual-for-larson-flavo-s-elementary-linear-algebra.pdf
    • http://www.gorillawalker.com/healing-days-a-guide-for-kids-who-have-experienced-trauma.pdf
    • http://www.gorillawalker.com/first-steps-in-teaching-creative-dance-to-children.pdf
    • http://www.gorillawalker.com/freedom-from-obsession-and-compulsion-my-journey-and-discovery-of.pdf
    • http://www.gorillawalker.com/aromatherapy-heals-the-body-and-mind-from-the-oil-selected.pdf
    • http://www.gorillawalker.com/folkevekst-og-flytting-en-historisk-demografisk-studie-i-1700-renes.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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