Malicious PDF — malware analysis report

Static analysis result for SHA-256 a209bba81fff04b6…

MALICIOUS

PDF

42.5 KB Created: 2018-11-23 21:01:00 +03:00 Authoring application: FrameMaker 12.0.4 (via Acrobat Distiller 11.0 (Windows))
MD5: b3fa5551a48aec8f8e617c46a2d39a9f SHA-1: 08fcaea5578dabcdef21cd12fedf3d8d705f3336 SHA-256: a209bba81fff04b6ebe9ad711c3944942091baf6e92c608745c5b9caff560f65
90 Risk Score

Malware Insights

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

The PDF file was flagged by an ML classifier and contains a large number of embedded external links, consistent with a link farm or SEO poisoning attack. The primary heuristic indicates a mass of external PDF links, suggesting the document's purpose is to direct users to numerous other PDF resources. No scripts were extracted, and the document body contained mostly binary data and URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/fishes-of-the-year-the-highlights-aqualog-special.pdf
    • http://www.gorillawalker.com/the-new-parents-fun-book-laugh-yourself-silly-through-baby.pdf
    • http://www.gorillawalker.com/leadership-in-balance-new-habits-of-the-mind.pdf
    • http://www.gorillawalker.com/jews-in-german-literature-since-1945-german-jewish-literature-german.pdf
    • http://www.gorillawalker.com/odd-jobs-essays-and-criticism.pdf
    • http://www.gorillawalker.com/terminus-fringe-worlds-1.pdf
    • http://www.gorillawalker.com/revenge-of-the-wrought-iron-flamingos-meg-langslow-mysteries.pdf
    • http://www.gorillawalker.com/small-animal-care.pdf
    • http://www.gorillawalker.com/the-forbiddance-love.pdf
    • http://www.gorillawalker.com/genetic-variation-and-nutrition-proceedings-of-the-1st-international-conference.pdf
    • http://www.gorillawalker.com/the-lazarus-gate-the-apollonian-case-files-1.pdf
    • http://www.gorillawalker.com/raffles-and-the-british-invasion-of-java.pdf
    • http://www.gorillawalker.com/rugby-football-during-the-nineteenth-century-a-collection-of-contemporary.pdf
    • http://www.gorillawalker.com/at-home-with-madhur-jaffrey-simple-delectable-dishes-from-india.pdf
    • http://www.gorillawalker.com/screen-of-kings.pdf
    • http://www.gorillawalker.com/hipaa-handbook-for-nursing-clinical-staff-25-pk-understanding-the.pdf
    • http://www.gorillawalker.com/apples-i-know-that.pdf
    • http://www.gorillawalker.com/moleskine-2016-weekly-notebook-12m-pocket-royal-blue-hard-cover.pdf
    • http://www.gorillawalker.com/design-on-a-dime-achieve-high-style-on-a-1.pdf
    • http://www.gorillawalker.com/no-holds-barred-the-strange-life-of-john-e-du.pdf
    • http://www.gorillawalker.com/war-and-peace-in-an-age-of-terrorism-a-reader.pdf
    • http://www.gorillawalker.com/quick-easy-energy-boosters-5-minute-routines-for-anyone-anytime.pdf
    • http://www.gorillawalker.com/emergency-medicine-q-a-pearls-of-wisdom-third-edition.pdf
    • http://www.gorillawalker.com/hunters-of-kentucky-the-a-narrative-history-of-america-s.pdf
    • http://www.gorillawalker.com/a-new-beginning.pdf
    • http://www.gorillawalker.com/nelson-handwriting-workbook-1.pdf
    • http://www.gorillawalker.com/pursued-by-the-pack-megabundle-werewolf-gangbang.pdf
    • http://www.gorillawalker.com/christmas-in-nevada.pdf
    • http://www.gorillawalker.com/transtornos-dissociativos-portuguese-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/the-international-tax-handbook-third-edition.pdf
    • http://www.gorillawalker.com/genre-fusion-a-new-approach-to-history-fiction-and-memory.pdf
    • http://www.gorillawalker.com/ordinary-differential-equations-graduate-texts-in-mathematics.pdf
    • http://www.gorillawalker.com/iberian-sketches-for-tenor-saxophone-and-piano-by-ralph-martino.pdf
    • http://www.gorillawalker.com/best-handwriting-for-ages-7-11-teachers-resource-book-photocopiable.pdf
    • http://www.gorillawalker.com/physics-of-the-solar-corona-an-introduction-with-problems-and.pdf
    • http://www.gorillawalker.com/plato-theaetetus-focus-philosophical-library.pdf
    • http://www.gorillawalker.com/making-a-differnce-canadian-multicultural-literature.pdf
    • http://www.gorillawalker.com/invisible-forms-a-guide-to-literary-curiosities.pdf
    • http://www.gorillawalker.com/the-great-noob-takeover-a-mining-novel-ft-sky-and.pdf
    • http://www.gorillawalker.com/darkest-mercy-wicked-lovely.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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