Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4999976301fc94b…

MALICIOUS

PDF

43.7 KB Created: 2018-12-15 20:19:53 +03:00 Authoring application: Acrobat PDFMaker 11 for Word (via Acrobat Distiller 11.0 (Windows))
MD5: 33a11688542e9da8fa2ed91dec03b69a SHA-1: a2b731d908f09e42459226e2a6f398ceccde48d9 SHA-256: a4999976301fc94bef309dbd965c3b720ca9ce8f0395cef715b59eb5f548d1ba
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external documents, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/courtesans-and-fishcakes-the-consuming-passions-of-classical-athens.pdf
    • http://www.gorillawalker.com/saxo-grammaticus-volume-1-gesta-danorum-the-history-of-the.pdf
    • http://www.gorillawalker.com/the-era-of-uncertainty-global-investment-strategies-for-inflation-deflation.pdf
    • http://www.gorillawalker.com/theatric-release-paranormal-gender-swap-futanari-coven-convent-and-court.pdf
    • http://www.gorillawalker.com/california-the-politics-of-diversity.pdf
    • http://www.gorillawalker.com/sothebys-good-clocks-watches-wristwatches-barometers-and-scientific-instruments-london.pdf
    • http://www.gorillawalker.com/the-theology-of-the-early-greek-philosophers-the-gifford-lectures.pdf
    • http://www.gorillawalker.com/the-spanish-monarchy-and-irish-mercenaries-1618-6-history.pdf
    • http://www.gorillawalker.com/going-home-coming-home-ve-nha-tham-que-huong.pdf
    • http://www.gorillawalker.com/supplemental-health-insurance.pdf
    • http://www.gorillawalker.com/a-book-on-angling-being-a-complete-treatise-on-the.pdf
    • http://www.gorillawalker.com/written-maternal-authority-and-eighteenth-century-education-in-britain-educating.pdf
    • http://www.gorillawalker.com/fodor-s-cancun-cozumel-yucatan-peninsula-2002-the-guide-for.pdf
    • http://www.gorillawalker.com/primal-surrender-surrender-series-book-3.pdf
    • http://www.gorillawalker.com/limits-of-computation-an-introduction-to-the-undecidable-and-the.pdf
    • http://www.gorillawalker.com/outbound-flight-star-wars.pdf
    • http://www.gorillawalker.com/sister-sarah-s-pick-5-lotto-ira-s-system-win.pdf
    • http://www.gorillawalker.com/life-span-developmental-psychology.pdf
    • http://www.gorillawalker.com/out-of-the-silence-a-study-of-a-religious-community.pdf
    • http://www.gorillawalker.com/the-silent-war-the-cold-war-battle-beneath-the-sea.pdf
    • http://www.gorillawalker.com/working-with-staff-to-overcome-challenging-behavior-among-people-who.pdf
    • http://www.gorillawalker.com/triumph-cars-in-america.pdf
    • http://www.gorillawalker.com/holt-algebra-2.pdf
    • http://www.gorillawalker.com/the-lost-girls-get-it-started-after-hours-last-call.pdf
    • http://www.gorillawalker.com/ben-s-trumpet.pdf
    • http://www.gorillawalker.com/el-dedo-y-la-luna-cuentos-zen-haikus-koans.pdf
    • http://www.gorillawalker.com/poet-by-default.pdf
    • http://www.gorillawalker.com/writers-artists-yearbook-2010.pdf
    • http://www.gorillawalker.com/compost-center-operator-gross-jobs.pdf
    • http://www.gorillawalker.com/saga-of-the-swamp-thing-book-2.pdf
    • http://www.gorillawalker.com/american-family-of-the-1930s-paper-dolls.pdf
    • http://www.gorillawalker.com/soul-spa-spiritual-therapy-for-women-in-leadership-77-self.pdf
    • http://www.gorillawalker.com/world-war-i-atlas-of-conflicts.pdf
    • http://www.gorillawalker.com/a-ship-possessed-j-d-stanton-mystery-series-1.pdf
    • http://www.gorillawalker.com/color-palettes-atmospheric-interiors-using-the-donald-kaufman-color-collection.pdf
    • http://www.gorillawalker.com/political-parties-and-the-state.pdf
    • http://www.gorillawalker.com/the-ugly-duckling-fairy-tale-slide-see.pdf
    • http://www.gorillawalker.com/grace-kelly-film-stills.pdf
    • http://www.gorillawalker.com/the-ring-of-words-an-anthology-of-song-texts-norton.pdf
    • http://www.gorillawalker.com/anim-nackte-junge-hentai-fonds-von-geschlecht-hei-manga-abbildungen.pdf
    • http://www.gorillawalker.com/sotheby
    • 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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