Malicious PDF — malware analysis report

Static analysis result for SHA-256 5870a447a51af629…

MALICIOUS

PDF

41.3 KB Created: 2018-11-15 05:48:51 +03:00 Authoring application: Adobe InDesign CS4 (6.0.6) (via Adobe PDF Library 9.0)
MD5: a51e3f31b8bf4184dba564deb2c81c24 SHA-1: 322de46724a9e401ff8ca91728babb1a0ce51041 SHA-256: 5870a447a51af6293973a1ca6a1430dc78d88ea951d11a480c6c51a6aac825b8
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 PDF files on the same domain, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a link farm or content distribution tactic. The ML classifier also flagged the PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8469

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/how-your-body-works-a-good-look-inside-you-insides.pdf
    • http://www.gorillawalker.com/little-brown-bear-and-the-bundle-of-joy.pdf
    • http://www.gorillawalker.com/the-lives-of-cornelius-nepos.pdf
    • http://www.gorillawalker.com/prague-dk-eyewitness-travel-guide.pdf
    • http://www.gorillawalker.com/old-possum-s-book-of-practical-pigs.pdf
    • http://www.gorillawalker.com/ole-doc-methuselah.pdf
    • http://www.gorillawalker.com/the-imaginary.pdf
    • http://www.gorillawalker.com/current-techniques-in-ophthalmic-laser-surgery-3e.pdf
    • http://www.gorillawalker.com/rivastigmine-is-good-first-line-drug-for-parkinson-s-dementia.pdf
    • http://www.gorillawalker.com/nick-drake-dreaming-england-reaktion-books-reverb.pdf
    • http://www.gorillawalker.com/national-geographic-traveler-alemania-spanish-edition.pdf
    • http://www.gorillawalker.com/fairy-tale-fun.pdf
    • http://www.gorillawalker.com/have-atheists-proved-there-is-no-god.pdf
    • http://www.gorillawalker.com/home-is-where-the-heart-is.pdf
    • http://www.gorillawalker.com/mahabharata-book-two-the-great-hall-bk-2.pdf
    • http://www.gorillawalker.com/economics-marxian-versus-neoclassical.pdf
    • http://www.gorillawalker.com/the-iliad-the-odyssey-and-all-of-greek-mythology-in.pdf
    • http://www.gorillawalker.com/christ-and-the-the-catholic-priesthood-ecclesial-hierarchy-and-the.pdf
    • http://www.gorillawalker.com/mensa-lateral-thinking-logical-deduction.pdf
    • http://www.gorillawalker.com/citizenship-ready-for-the-interview.pdf
    • http://www.gorillawalker.com/dobry-puffin-newbery-library.pdf
    • http://www.gorillawalker.com/seakeeping-ship-behaviour-in-rough-weather.pdf
    • http://www.gorillawalker.com/confidence-hacks-24-simple-habits-and-techniques-to-get-out.pdf
    • http://www.gorillawalker.com/the-portly-pixie-adventure-files-volume-1-kindle-edition.pdf
    • http://www.gorillawalker.com/the-electronic-everyday-writer-3-0.pdf
    • http://www.gorillawalker.com/ocular-motility-ophthalmic-technical-skills-ser.pdf
    • http://www.gorillawalker.com/chinese-traditional-health-calendar-2007-chinese-new-year-paperback.pdf
    • http://www.gorillawalker.com/spectrum-test-prep-grade-4.pdf
    • http://www.gorillawalker.com/national-electrical-code-2011-pocket-guide-for-residential-electrical-installations.pdf
    • http://www.gorillawalker.com/the-politics-of-the-middle-east.pdf
    • http://www.gorillawalker.com/ketogenic-diet-a-beginners-guide-to-weight-loss-detoxification-improved.pdf
    • http://www.gorillawalker.com/how-to-be-financially-successful-a-spiritual-perspective-ascension-series.pdf
    • http://www.gorillawalker.com/essential-developmental-biology-by-slack-jonathan-m-w-wiley-blackwell.pdf
    • http://www.gorillawalker.com/false-positive-a-novel.pdf
    • http://www.gorillawalker.com/the-billionaire-s-dark-secrets-complete-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/practical-handbook-for-private-investigators.pdf
    • http://www.gorillawalker.com/clinical-assessment-in-respiratory-care.pdf
    • http://www.gorillawalker.com/fulfilling-her-fantasy-a-masters-of-the-castle-novella-kindle.pdf
    • http://www.gorillawalker.com/decoracion-del-hogar-y-mueble-moderno-spanish-edition.pdf
    • http://www.gorillawalker.com/doggy-tales-doggy-tales-1-siren-publishing-classic-doggy-tales.pdf
    • http://www.gorillawalker.com/current-techniques-in-oph
    • 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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