Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd40821657825db6…

MALICIOUS

PDF

44.6 KB Created: 2019-03-18 11:04:10 +03:00 Authoring application: dvips(k) 5.99 Copyright 2010 Radical Eye Software (via Acrobat Distiller 9.4.5 (Windows))
MD5: a5d23ffaca1cc0ec486399eb6bada909 SHA-1: 4fbdc757aacf6b6b44fb43b372c4c180cc756bc1 SHA-256: fd40821657825db6ba45619be406d54c2a8cb4be3519c85c90107360026319bb
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files, 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 0.8439

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/world-futsal-magazine-plus-vol28-one-on-one-training-interview.pdf
    • http://www.gorillawalker.com/a-street-girl-named-desire-a-novel.pdf
    • http://www.gorillawalker.com/mute-witness.pdf
    • http://www.gorillawalker.com/digital-art-science-fiction-chinese-edition.pdf
    • http://www.gorillawalker.com/the-japanese-tea-ceremony-cha-no-yu-tuttle-classics.pdf
    • http://www.gorillawalker.com/money-in-africa-british-museum-research-publication.pdf
    • http://www.gorillawalker.com/the-new-american-bible-revised-edition-large-print-edition.pdf
    • http://www.gorillawalker.com/smith-and-hogan-s-criminal-law.pdf
    • http://www.gorillawalker.com/cops-gone-wild-explicit-alpha-male-box-set-kindle-edition.pdf
    • http://www.gorillawalker.com/the-2013-import-and-export-market-for-printed-maps-hydrographic.pdf
    • http://www.gorillawalker.com/complementary-secondary-metabolites-in-an-octocoral-competing-with-a-scleractinian.pdf
    • http://www.gorillawalker.com/the-stevenson-plan-a-novel-of-the-monterey-peninsula.pdf
    • http://www.gorillawalker.com/archy-mehitabel-illustrated-by-george-harriman.pdf
    • http://www.gorillawalker.com/the-best-of-the-best-of-american-science-writin-bycohen.pdf
    • http://www.gorillawalker.com/black-ops-death-in-the-desert.pdf
    • http://www.gorillawalker.com/more-custom-slipcovers-easy-to-make-snug-fitting.pdf
    • http://www.gorillawalker.com/georgia-class-d-minor-league-baseball-encyclopedia.pdf
    • http://www.gorillawalker.com/peter-schlesinger-a-photographic-memory-1968-1989.pdf
    • http://www.gorillawalker.com/until-the-sun-rises.pdf
    • http://www.gorillawalker.com/gawain-and-ragnell-a-pendragon-chronicles-short-story-the-pendragon.pdf
    • http://www.gorillawalker.com/the-2009-import-and-export-market-for-blankets-and-travel.pdf
    • http://www.gorillawalker.com/austria-webster-s-specialty-crossword-puzzles-volume-1-the-essentials.pdf
    • http://www.gorillawalker.com/ancient-buddhism-in-japan-sutras-and-ceremonies-in-use-in.pdf
    • http://www.gorillawalker.com/monterey-peninsula-the-golden-age-postcard-of-america.pdf
    • http://www.gorillawalker.com/the-science-and-technology-of-industrial-water-treatment.pdf
    • http://www.gorillawalker.com/horse-racing-handicapping-sampler-2-a-sampling-of-horse-racing.pdf
    • http://www.gorillawalker.com/a-home-at-last.pdf
    • http://www.gorillawalker.com/parasites-and-human-disease.pdf
    • http://www.gorillawalker.com/legally-correct-fairy-tales.pdf
    • http://www.gorillawalker.com/german-survival-guide-the-language-and-culture-you-need-to.pdf
    • http://www.gorillawalker.com/reading-ekgs-correctly-nursing-skillbook.pdf
    • http://www.gorillawalker.com/examples-explanations-secured-transactions-5th-fifth-edition.pdf
    • http://www.gorillawalker.com/nakoa-s-woman.pdf
    • http://www.gorillawalker.com/secrets-volume-19-timeless-passions-secrets-volumes.pdf
    • http://www.gorillawalker.com/teaching-self-determination-to-students-with-disabilities-basic-skills-for.pdf
    • http://www.gorillawalker.com/the-viennese-minor-key-symphony-in-the-age-of-haydn.pdf
    • http://www.gorillawalker.com/abbey-road.pdf
    • http://www.gorillawalker.com/problems-and-solutions-on-mechanics-major-american-universities-ph-d.pdf
    • http://www.gorillawalker.com/caribbean-by-cruise-ship-7th-edition-the-complete-guide-to.pdf
    • http://www.gorillawalker.com/love-and-mistletoe-ballybeg-book-4-the-ballybeg-series-volume.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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