Malicious PDF — malware analysis report

Static analysis result for SHA-256 f854394141f5613a…

MALICIOUS

PDF

41.9 KB Created: 2019-03-18 07:43:48 +03:00 Authoring application: FrameMaker 10.0.2 (via Acrobat Distiller 10.1.15 (Windows))
MD5: 1b506a1e6961d5a4c10fa4f61eb408d6 SHA-1: ddbfcb2682cc49b03186ec8559cfad06d05e1371 SHA-256: f854394141f5613a8329baac0af6af190cfad2108ea7e5e2f4776bfb1ab39ac6
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. A critical heuristic identified a large number of external PDF links, suggesting a link farm or distribution mechanism. The embedded URLs point to various PDF documents hosted on gorillawalker.com, which are likely intended to lure users into downloading further malicious content or to manipulate search engine rankings.

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/super-safari-level-2-class-audio-cds-2-american-english.pdf
    • http://www.gorillawalker.com/left-behind-the-kids-the-underground.pdf
    • http://www.gorillawalker.com/game-theory-and-the-law-economic-approaches-to-law.pdf
    • http://www.gorillawalker.com/blackjack-tome-12.pdf
    • http://www.gorillawalker.com/patience-the-amish-buggy-horse-volume-4.pdf
    • http://www.gorillawalker.com/faiths-of-eberron-dungeons-dragons-d20-3-5-fantasy-roleplaying.pdf
    • http://www.gorillawalker.com/controversies-in-trauma-management-clinics-in-emergency-medicine.pdf
    • http://www.gorillawalker.com/dominican-republic-adventure-guide-adventure-guides.pdf
    • http://www.gorillawalker.com/teaching-surgeons-hands-to-heal-a-urological-surgical-chairman-s.pdf
    • http://www.gorillawalker.com/a-mah-jong-handbook-how-to-play-score-and-win.pdf
    • http://www.gorillawalker.com/cult-of-analytics-driving-online-marketing-strategies-using-web-analytics.pdf
    • http://www.gorillawalker.com/jersey-guernsey-herm-sark-alderney-and-western-normandy.pdf
    • http://www.gorillawalker.com/how-to-train-your-dragon-a-journal-for-heroes.pdf
    • http://www.gorillawalker.com/elise-episode-9-heresy.pdf
    • http://www.gorillawalker.com/linda-eder-it-s-no-secret-anymore-piano-vocal-guitar.pdf
    • http://www.gorillawalker.com/you-re-going-to-be-my-mom-a-40-week.pdf
    • http://www.gorillawalker.com/willard-boepple-sculpture-the-sense-of-things.pdf
    • http://www.gorillawalker.com/advanced-grammar-in-use-book-with-answers-and-cd-rom.pdf
    • http://www.gorillawalker.com/prophecy-of-darkness-xena-warrior-princess.pdf
    • http://www.gorillawalker.com/gibson-the-origins-of-the-gibsons-and-their-place-in.pdf
    • http://www.gorillawalker.com/governing-california-in-the-twenty-first-century-third-edition.pdf
    • http://www.gorillawalker.com/servants-of-allah-african-muslims-enslaved-in-the-americas.pdf
    • http://www.gorillawalker.com/the-lsat-deconstructed-series-volume-43-the-june-2004-lsat.pdf
    • http://www.gorillawalker.com/pile-ou-face-french-horn-solo.pdf
    • http://www.gorillawalker.com/new-mexico-baptisms-santa-cruz-de-la-canada-church-vol.pdf
    • http://www.gorillawalker.com/harris-pacific-northwest-business-directory-2015.pdf
    • http://www.gorillawalker.com/the-white-rabbit-and-other-delights-east-totem-west-a.pdf
    • http://www.gorillawalker.com/she-came-from-beyond-a-novel.pdf
    • http://www.gorillawalker.com/a-stillness-in-the-pines-the-ecology-of-the-red.pdf
    • http://www.gorillawalker.com/healing-path.pdf
    • http://www.gorillawalker.com/word-translations-4th-edition-gmat-strategy-guide-no-4.pdf
    • http://www.gorillawalker.com/observation-doctor-dom-volume-2.pdf
    • http://www.gorillawalker.com/brush-back-a-v-i-warshawski-novel.pdf
    • http://www.gorillawalker.com/aftermath-volume-1.pdf
    • http://www.gorillawalker.com/kids-say-the-cutest-things-about-dogs.pdf
    • http://www.gorillawalker.com/learn-in-your-car-italian-level-one-with-guidebook-italian.pdf
    • http://www.gorillawalker.com/technique-special-effects-tv-2nd.pdf
    • http://www.gorillawalker.com/audio-cd-set-4-disk-set-for-use-with-jazz.pdf
    • http://www.gorillawalker.com/501-sentence-completion-questions-501-series.pdf
    • http://www.gorillawalker.com/deadly.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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