Malicious PDF — malware analysis report

Static analysis result for SHA-256 332b6c5ab9a81eee…

MALICIOUS

PDF

42.7 KB Created: 2018-12-08 04:12:59 +03:00 Authoring application: - (via XEP 4.4 build 20050610)
MD5: ecbda3c988e266fed387a07964bd9be5 SHA-1: 4adf5c483f7f0aa221481990e9e2e82de80ac607 SHA-256: 332b6c5ab9a81eee26163ba47d5e92cf58ac8e390c68ed7048d2c0adf2573179
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a large number of embedded links to external PDF files hosted on www.gorillawalker.com. This behavior is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or improve the ranking of malicious sites. No scripts were extracted from this sample, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8856

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/books-for-kids-the-orange-mermaid-book-2-children-s.pdf
    • http://www.gorillawalker.com/the-scarlet-ibis.pdf
    • http://www.gorillawalker.com/black-is-the-colour-of-my-true-love-s-heart.pdf
    • http://www.gorillawalker.com/prime-of-your-life-fast-track-to-a-better-life.pdf
    • http://www.gorillawalker.com/the-complete-idiot-s-guide-to-rock-climbing.pdf
    • http://www.gorillawalker.com/the-impudent-rooster.pdf
    • http://www.gorillawalker.com/the-1964-1965-new-york-world-s-fair-creation-and.pdf
    • http://www.gorillawalker.com/boron-neutron-capture-therapy-toward-clinical-trials-of-glioma-treatment.pdf
    • http://www.gorillawalker.com/tauern-radweg-entlang-von-salzach-saalach-und-inn-bike-at.pdf
    • http://www.gorillawalker.com/business-ethics-ethical-decision-making-cases.pdf
    • http://www.gorillawalker.com/the-bad-catholic-s-guide-to-the-catechism-a-faithful.pdf
    • http://www.gorillawalker.com/accion-level-1-spanish-edition.pdf
    • http://www.gorillawalker.com/pictures-at-an-exhibition-orchestral-excerpts-for-the-brass-section.pdf
    • http://www.gorillawalker.com/pocket-posh-crosswords-2-75-puzzles.pdf
    • http://www.gorillawalker.com/billiards-and-snooker-for-amateurs.pdf
    • http://www.gorillawalker.com/the-best-team-money-can-buy-the-los-angeles-dodgers.pdf
    • http://www.gorillawalker.com/liar-game-04-german-edition.pdf
    • http://www.gorillawalker.com/all-things-are-connected-ssaaa-a-capella-with-optional-percussion.pdf
    • http://www.gorillawalker.com/abc-of-palliative-care.pdf
    • http://www.gorillawalker.com/the-magic-brocade-a-tale-of-china.pdf
    • http://www.gorillawalker.com/textiles-the-whole-story.pdf
    • http://www.gorillawalker.com/alaska-weather-2010-wall-calendar.pdf
    • http://www.gorillawalker.com/clear-speech-student-s-book-with-audio-cd-pronunciation-and.pdf
    • http://www.gorillawalker.com/reading-at-a-crossroads-disjunctures-and-continuities-in-conceptions-and.pdf
    • http://www.gorillawalker.com/first-fruits-of-freedom-the-migration-of-former-slaves-and.pdf
    • http://www.gorillawalker.com/german-cooking-today-paperback-2010-author-dr-oetker-verlag.pdf
    • http://www.gorillawalker.com/ill-wind-valkyrie.pdf
    • http://www.gorillawalker.com/advances-in-titicaca-basin-archaeology-2-monographs.pdf
    • http://www.gorillawalker.com/caught-by-the-mad-milker-kink-city-bimbos.pdf
    • http://www.gorillawalker.com/reagents-for-organic-synthesis.pdf
    • http://www.gorillawalker.com/the-habit.pdf
    • http://www.gorillawalker.com/wireless-broadband-networks-handbook.pdf
    • http://www.gorillawalker.com/translating-sensitive-texts-linguistic-aspects-approaches-to-translation-studies-14.pdf
    • http://www.gorillawalker.com/feng-shui-food.pdf
    • http://www.gorillawalker.com/we-too-sing-america-south-asian-arab-muslim-and-sikh.pdf
    • http://www.gorillawalker.com/pula-photoguides-jugoslavija.pdf
    • http://www.gorillawalker.com/srimad-devi-bhagavatam-translated-by-swami-vijnanananda-kindle-edition.pdf
    • http://www.gorillawalker.com/fusion-de-los-cinco-elementos-spanish-edition.pdf
    • http://www.gorillawalker.com/library-management-consultants-list.pdf
    • http://www.gorillawalker.com/a-piece-of-her-heart-the-raven-lunatic-volume-2.pdf
    • http://www.gorillawalker.com/boron-neu
    • 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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