Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab9b089a9f653109…

MALICIOUS

PDF

45.1 KB Created: 2018-12-15 08:17:11 +03:00 Authoring application: FrameMaker 7.1 (via Acrobat Distiller 7.0.5 (Windows))
MD5: 72fb5bb1147e97395d88b734ec4be335 SHA-1: 7130aa08237375d3cbdfa8a1ada9dfc5aeb5e043 SHA-256: ab9b089a9f65310950849f9c303265ccf6dbe6aac005848827b23951e3a202d8
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. The embedded URLs are likely used to redirect users to malicious websites or to manipulate search engine rankings. No scripts were extracted from this sample.

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/foyle-s-war.pdf
    • http://www.gorillawalker.com/ddsep-iii-a-core-curriculum-and-self-assessment-in-gastroenterology.pdf
    • http://www.gorillawalker.com/life-behind-barbed-wire-the-secret-world-war-ii-photographs.pdf
    • http://www.gorillawalker.com/biblical-quizzical-game.pdf
    • http://www.gorillawalker.com/brandeis.pdf
    • http://www.gorillawalker.com/futanari-demigoddess-7-good-girl-gone-wild-futa-on-female.pdf
    • http://www.gorillawalker.com/northwoods-whitewater-a-paddlers-guide-to-whitewater-of-minnesota-wisconsin.pdf
    • http://www.gorillawalker.com/firstfruits.pdf
    • http://www.gorillawalker.com/strings-around-the-world-folk-songs-of-the-u-s.pdf
    • http://www.gorillawalker.com/hot-on-his-trail.pdf
    • http://www.gorillawalker.com/moon-pie.pdf
    • http://www.gorillawalker.com/ties-that-bind-a-muse-urban-fantasy-the-veil-series.pdf
    • http://www.gorillawalker.com/cultural-heritage-information-access-and-management-iresearch.pdf
    • http://www.gorillawalker.com/historical-dictionary-of-latin-american-literature-and-theater-historical-dictionaries.pdf
    • http://www.gorillawalker.com/children-s-books-words-that-begin-with-c-kids-learning.pdf
    • http://www.gorillawalker.com/probability-theory-a-comprehensive-course-universitext.pdf
    • http://www.gorillawalker.com/buddha-his-life-and-teachings-and-impact-on-humanity-pillars.pdf
    • http://www.gorillawalker.com/south-beach-diet-good-fats-good-carbs-gtuide-complete-and.pdf
    • http://www.gorillawalker.com/physical-geology-across-the-american-landscape.pdf
    • http://www.gorillawalker.com/mcgraw-hill-handbook-of-commodities-and-futures.pdf
    • http://www.gorillawalker.com/i-libri-degli-altri-lettere-1947-1981-italian-edition.pdf
    • http://www.gorillawalker.com/a-new-crop-of-nonwovens-cargill-dow-polymers-llc-s.pdf
    • http://www.gorillawalker.com/maisy-s-amazing-big-book-of-learning.pdf
    • http://www.gorillawalker.com/the-transportation-of-soviet-energy-resources.pdf
    • http://www.gorillawalker.com/mass-media-law-cases-and-materials-edition-7.pdf
    • http://www.gorillawalker.com/the-world-and-its-people-western-hemisphere-europe-and-russia.pdf
    • http://www.gorillawalker.com/steven-gerrard-my-liverpool-story.pdf
    • http://www.gorillawalker.com/population-growth-global-viewpoints.pdf
    • http://www.gorillawalker.com/earl-nightingale-reads-think-and-grow-rich.pdf
    • http://www.gorillawalker.com/b-17-nose-art-name-directory.pdf
    • http://www.gorillawalker.com/building-materials-of-the-ancient-maya-a-study-of-archaeological.pdf
    • http://www.gorillawalker.com/micromagnetism-and-the-microstructure-of-ferromagnetic-solids-cambridge-studies-in.pdf
    • http://www.gorillawalker.com/backyard-chickens-for-fresh-eggs-raising-chickens-for-healthy-organic.pdf
    • http://www.gorillawalker.com/food-additive-loopholes-memo-from-mfj-food-additives-amendment-of.pdf
    • http://www.gorillawalker.com/cavaliers-and-pioneers-abstracts-of-virginia-land-patents-and-grants.pdf
    • http://www.gorillawalker.com/the-nowhere-bible-utopia-dystopia-science-fiction-studies-of-the.pdf
    • http://www.gorillawalker.com/unabridged-christianity-biblical-answers-to-common-questions-about-the-roman.pdf
    • http://www.gorillawalker.com/a-peculiar-people-slave-religion-and-community-culture-among-the.pdf
    • http://www.gorillawalker.com/gaturro-6-spanish-edition.pdf
    • http://www.gorillawalker.com/the-colonizer-s-model-of-the-world-geographical-diffusionism-and.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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