Malicious PDF — malware analysis report

Static analysis result for SHA-256 089f1c86ceb14e59…

MALICIOUS

PDF

45.8 KB Created: 2018-11-15 18:32:14 +03:00 Authoring application: QuarkXPress(R) 9.54
MD5: 797f26a99277c36e01edb5b2e0b43e06 SHA-1: d3fcce845438792b06cce979546eef08b93329e0 SHA-256: 089f1c86ceb14e5957430cd9bbb208a548d337d3d9aad5731f13c65857a4d939
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute malware. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern beyond the link farm.

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/engineering-psychology-and-cognitive-ergonomics-aerospace-and-transportation-systems-engineering.pdf
    • http://www.gorillawalker.com/4-03-2015-j-cramer-stocks-buy-sell-hold-ratings.pdf
    • http://www.gorillawalker.com/golden-autumn-2-piano-sheet-music-original-solo-piano-pieces.pdf
    • http://www.gorillawalker.com/aromatherapy-massage-book-2003-isbn-4309266452-japanese-import.pdf
    • http://www.gorillawalker.com/guia-practica-de-remedios-caseros-practical-guide-of-home-remedies.pdf
    • http://www.gorillawalker.com/blackjack-s-hidden-secrets-win-without-counting.pdf
    • http://www.gorillawalker.com/dahlin-s-bone-tumors-general-aspects-and-data-on-10.pdf
    • http://www.gorillawalker.com/jazz-city-the-impact-of-our-cities-on-the-development.pdf
    • http://www.gorillawalker.com/centers-of-power-the-convergence-of-psychoanalysis-and-kabbalah.pdf
    • http://www.gorillawalker.com/guide-to-bahrain-kindle-edition.pdf
    • http://www.gorillawalker.com/cyborg-009-vol-2.pdf
    • http://www.gorillawalker.com/preserving-the-world-s-great-cities-the-destruction-and-renewal.pdf
    • http://www.gorillawalker.com/swamp-magic-swamp-magic-series-book-1.pdf
    • http://www.gorillawalker.com/ideality-in-the-physical-sciences.pdf
    • http://www.gorillawalker.com/quantitative-remote-sensing-of-land-surfaces.pdf
    • http://www.gorillawalker.com/human-colon-cancer-epithelial-cells-harbour-active-hedgehog-gli-signalling.pdf
    • http://www.gorillawalker.com/houghton-mifflin-reading-anthology-adventures-grade-2-1.pdf
    • http://www.gorillawalker.com/mindful-manipulation-how-perception-expectation-and-behavior-connect-to-create.pdf
    • http://www.gorillawalker.com/a-mediterranean-society-the-jewish-communities-of-the-arab-world.pdf
    • http://www.gorillawalker.com/decorating-with-fabric-liberty-style.pdf
    • http://www.gorillawalker.com/the-derivation-and-use-of-population-data-for-major-hazard.pdf
    • http://www.gorillawalker.com/the-smith-manoeuvre.pdf
    • http://www.gorillawalker.com/ennion-master-of-roman-glass-metropolitan-museum-of-art.pdf
    • http://www.gorillawalker.com/group-theory.pdf
    • http://www.gorillawalker.com/major-principles-of-media-law-2010-edition.pdf
    • http://www.gorillawalker.com/create-your-own-truck-sticker-activity-book-dover-little-activity.pdf
    • http://www.gorillawalker.com/colorado-narrow-gauge-calendar.pdf
    • http://www.gorillawalker.com/deontic-logic-and-normative-systems-12th-international-conference-deon-2014.pdf
    • http://www.gorillawalker.com/how-to-live-in-a-car-van-or-rv-30.pdf
    • http://www.gorillawalker.com/short-shorts-a-short-story-compilation-kindle-edition.pdf
    • http://www.gorillawalker.com/desea-sonreir-existe-dios-la-vida-es-infinita-con-base.pdf
    • http://www.gorillawalker.com/construction-calculations-manual-kindle-edition.pdf
    • http://www.gorillawalker.com/i-am-a-child-molester-how-to-tell-that-your.pdf
    • http://www.gorillawalker.com/introduction-to-the-law-and-legal-system-of-the-united.pdf
    • http://www.gorillawalker.com/the-journey-of-a-caribbean-writer-seagull-books-the-africa.pdf
    • http://www.gorillawalker.com/herzfeld-s-guide-to-closed-end-funds.pdf
    • http://www.gorillawalker.com/fallout-the-environmental-consequences-of-the-world-trade-center-collapse.pdf
    • http://www.gorillawalker.com/war-movie-posters-illustrated-history-of-movies-through-posters.pdf
    • http://www.gorillawalker.com/meet-the-skeptic-leader-guide.pdf
    • http://www.gorillawalker.com/belgian-rattlesnake-the-lewis-automatic-machine-gun-a-social-and.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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