Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ab1ee8bb31fadb…

MALICIOUS

PDF

43.9 KB Created: 2018-12-15 08:53:43 +03:00 Authoring application: Adobe InDesign CS3 (5.0) (via Adobe PDF Library 8.0)
MD5: ed6fadc3b24950b69dfe43fdc81e3e70 SHA-1: 05e745d5c9292996e7dfc9fbfe5919a9c3416fc4 SHA-256: e1ab1ee8bb31fadb6f92413a377d3af2734776723dc427483b3b22cbfc9585c6
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a large number of embedded URLs, indicating a potential link farm or redirection scheme. The heuristic 'PDF_SEO_LINK_FARM' specifically points to the mass embedding of external PDF links, with the primary domain being www.gorillawalker.com. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine the exact user-facing lure. The primary attack pattern involves leveraging these numerous links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8859

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/the-mathematics-of-lottery-odds-combinations-systems.pdf
    • http://www.gorillawalker.com/seismic-design-of-buildings-specifications-frequently-asked-questions.pdf
    • http://www.gorillawalker.com/marie-curie-giants-of-science.pdf
    • http://www.gorillawalker.com/phonics-they-use-words-for-reading-and-writing-3rd-edition.pdf
    • http://www.gorillawalker.com/memphis-insight-fleximap-fleximaps.pdf
    • http://www.gorillawalker.com/ultimate-sticker-book-star-wars-the-clone-wars.pdf
    • http://www.gorillawalker.com/routledge-companion-to-sports-history-routledge-international-handbooks.pdf
    • http://www.gorillawalker.com/scapegoats-transferring-blame-economics-2.pdf
    • http://www.gorillawalker.com/adolescent-emotional-development-and-the-emergence-of-depressive-disorders.pdf
    • http://www.gorillawalker.com/handbook-of-research-design-and-social-measurement.pdf
    • http://www.gorillawalker.com/windows-7-no-fluff-guide-kindle-edition.pdf
    • http://www.gorillawalker.com/collection-of-viki-santos-books.pdf
    • http://www.gorillawalker.com/similarity-in-difference-marriage-in-europe-and-asia-1700-1900.pdf
    • http://www.gorillawalker.com/what-your-husband-isn-t-telling-you-a-guided-tour.pdf
    • http://www.gorillawalker.com/other-people-s-money-the-real-business-of-finance.pdf
    • http://www.gorillawalker.com/the-hollywood-curriculum-teachers-in-the-movies-counterpoints.pdf
    • http://www.gorillawalker.com/the-dark-side-of-lyndon-baines-johnson-kindle-edition.pdf
    • http://www.gorillawalker.com/ged-practice-test-2-0-audio-pack-ged-practice-tests.pdf
    • http://www.gorillawalker.com/guy-goes-into-a-bar.pdf
    • http://www.gorillawalker.com/polymer-clay-the-ultimate-beginners-guide-to-creating-animals-in.pdf
    • http://www.gorillawalker.com/computation-and-its-limits.pdf
    • http://www.gorillawalker.com/human-cytomegaloviruses-methods-and-protocols-methods-in-molecular-biology.pdf
    • http://www.gorillawalker.com/fear-3-1-chain-gang-graphics-ride-1.pdf
    • http://www.gorillawalker.com/dallas-rediscovered-a-photographic-chronicle-of-urban-expansion-1870-1925.pdf
    • http://www.gorillawalker.com/making-soapies-in-kabul-hot-days-crazy-nights-and-dangerous.pdf
    • http://www.gorillawalker.com/hablemos-claro-de-la-preocupaci-n-c-mo-vencer-las.pdf
    • http://www.gorillawalker.com/riding-from-the-inside-out.pdf
    • http://www.gorillawalker.com/anne-stuart-the-house-of-rohan-box-set-the-wicked.pdf
    • http://www.gorillawalker.com/modern-refrigeration-and-air-conditioning-instructor-s-manual.pdf
    • http://www.gorillawalker.com/transvergence-heritage-universe.pdf
    • http://www.gorillawalker.com/logic-demystified.pdf
    • http://www.gorillawalker.com/living-with-high-blood-pressure-overcoming-common-problems.pdf
    • http://www.gorillawalker.com/unos-zapatos-nuevos-new-shoes-spanish-edition.pdf
    • http://www.gorillawalker.com/water-without-borders-canada-the-united-states-and-shared-waters.pdf
    • http://www.gorillawalker.com/the-tinkerers-the-amateurs-diyers-and-inventors-who-make-america.pdf
    • http://www.gorillawalker.com/the-secrets-of-aromatherapy.pdf
    • http://www.gorillawalker.com/it-s-gone-no-wait-a-minute-talking-my-way.pdf
    • http://www.gorillawalker.com/the-real-deal-workout-drill-featuring-the-one-minute-workout.pdf
    • http://www.gorillawalker.com/the-poems-of-the-pearl-manuscript-pearl-cleanness-patience-sir.pdf
    • http://www.gorillawalker.com/journey-to-the-heart-of-pachamama.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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