Malicious PDF — malware analysis report

Static analysis result for SHA-256 82c49dc2109350b4…

MALICIOUS

PDF

46.3 KB Created: 2018-11-15 18:32:34 +03:00 Authoring application: TeX (via pdfTeX-1.40.9)
MD5: 1731e29d41b640cffa57e5bb01812ae7 SHA-1: 21d5793a137767d03f335d45284df4ac4326afb5 SHA-256: 82c49dc2109350b42440ba3b14f6ba9a23cc2b924cce4b8ba2f5f34b029a841f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a machine learning classifier and a critical heuristic identified it as a link farm containing 32 external PDF links. The primary purpose appears to be SEO manipulation or redirecting users to potentially malicious content hosted on www.gorillawalker.com. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8527

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/no-contact-lorimer-sports-stories.pdf
    • http://www.gorillawalker.com/unleash-your-hidden-poker-memory-how-to-win-at-texas.pdf
    • http://www.gorillawalker.com/handbook-of-tables-for-elliptic-function-filters.pdf
    • http://www.gorillawalker.com/the-cunning-man-a-hippo-yeoman-anthology-kindle-edition.pdf
    • http://www.gorillawalker.com/30-days-to-flat-abs-handbook-kindle-edition.pdf
    • http://www.gorillawalker.com/overheard-in-the-office-conversations-from-water-coolers-conference-rooms.pdf
    • http://www.gorillawalker.com/songs-from-the-loom-a-navajo-girl-learns-to-weave.pdf
    • http://www.gorillawalker.com/guide-to-spain-for-history-travellers-guides-for-history-travellers.pdf
    • http://www.gorillawalker.com/rebellion-the-history-of-england-from-james-i-to-the.pdf
    • http://www.gorillawalker.com/sonata-for-piano-and-violin-in-a-major-op-47.pdf
    • http://www.gorillawalker.com/evolutionary-ecology-6th-edition.pdf
    • http://www.gorillawalker.com/basic-aerobatic-manual-87-rev-90.pdf
    • http://www.gorillawalker.com/josie-smith-in-winter.pdf
    • http://www.gorillawalker.com/proverbial-cat-2011-mini-wall-calendar-calendar.pdf
    • http://www.gorillawalker.com/myth-of-the-welfare-queen-a-pulitzer-prize-winning-journalist.pdf
    • http://www.gorillawalker.com/multichannel-marketing-metrics-and-methods-for-on-and-offline-success.pdf
    • http://www.gorillawalker.com/my-mother-was-the-earth-my-father-was-the-sky.pdf
    • http://www.gorillawalker.com/the-lord-of-the-rings-the-trilogy-the-fellowship-of.pdf
    • http://www.gorillawalker.com/kamasutra-ilustrado-las-posiciones-de-la-uni-n-sexual-spanish.pdf
    • http://www.gorillawalker.com/coming-home-why-protestant-clergy-are-becoming-orthodox.pdf
    • http://www.gorillawalker.com/marketing-research-online-m-glichkeiten-und-grenzen-german-edition.pdf
    • http://www.gorillawalker.com/a-hot-planet-needs-cool-kids-understanding-climate-change-and.pdf
    • http://www.gorillawalker.com/marta-la-mia-vicina-sposata-italian-edition.pdf
    • http://www.gorillawalker.com/implant-procedures-for-the-general-dentist-an-issue-of-dental.pdf
    • http://www.gorillawalker.com/it-s-not-fair-how-to-guide-your-feisty-child.pdf
    • http://www.gorillawalker.com/the-authentic-death-and-contentious-afterlife-of-pat-garrett-and.pdf
    • http://www.gorillawalker.com/the-carrier-s-liability-under-international-maritime-conventions-the-hague.pdf
    • http://www.gorillawalker.com/tourist-experience-contemporary-perspectives-advances-in-tourism.pdf
    • http://www.gorillawalker.com/o-rio-score.pdf
    • http://www.gorillawalker.com/the-bolsheviks-and-workers-control-1917-1921-the-state-and.pdf
    • http://www.gorillawalker.com/applications-of-fibonacci-numbers-proceedings-of-the-fifth-international-conference.pdf
    • http://www.gorillawalker.com/after-dark-basic.pdf
    • http://www.gorillawalker.com/super-smart-180-challenging-thinking-activities-words-and-ideas-for.pdf
    • http://www.gorillawalker.com/ultimate-cake-ball-recipes-easy-and-delicious-cake-ball-recipes.pdf
    • http://www.gorillawalker.com/the-house-the-rockefellers-built-a-tale-of-money-taste.pdf
    • http://www.gorillawalker.com/builder-s-greywater-guide-installation-of-greywater-systems-in-new.pdf
    • http://www.gorillawalker.com/role-based-access-control.pdf
    • http://www.gorillawalker.com/life-in-the-rainforest.pdf
    • http://www.gorillawalker.com/the-most-valuable-asset-of-the-reich-a-history-of.pdf
    • http://www.gorillawalker.com/sharkproof.pdf
    • http://www.gorillawalker.com/30-
    • 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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