Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3b8dc14994d6a2…

MALICIOUS

PDF

44.8 KB Created: 2019-04-06 14:53:58 +03:00 Authoring application: - (via PDFlib Personalization Server 5.0.1 (COM/Win32) unlicensed)
MD5: 9e75dfc8f54d74f94702da14c07fc043 SHA-1: c767be5ff7e4cfe3b64a872889aebac80449dfec SHA-256: 2c3b8dc14994d6a2a5db5d15e582260407c10e189ddaeb18f9a409ef97bb955b
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files on the domain 'gorillawalker.com'. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious payloads. The ML classifier also flagged this PDF as malicious with a high probability. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8812

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/from-constantinople-to-the-home-of-omar-khayyam.pdf
    • http://www.gorillawalker.com/international-judicial-lawmaking-on-public-authority-and-democratic-legitimation-in.pdf
    • http://www.gorillawalker.com/the-lottery.pdf
    • http://www.gorillawalker.com/no-soy-floja-coleccion-click-click-ciencia-basica-spanish-edition.pdf
    • http://www.gorillawalker.com/the-washington-manual-of-surgery-department-of-surgery-washington-university.pdf
    • http://www.gorillawalker.com/the-complete-john-silence-stories-dover-horror-classics.pdf
    • http://www.gorillawalker.com/midsummer-magic-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/up-the-country-letters-written-to-her-sister-from-the.pdf
    • http://www.gorillawalker.com/a-child-s-story-of-easter-happy-day-board-books.pdf
    • http://www.gorillawalker.com/minnesota-state-flip-map.pdf
    • http://www.gorillawalker.com/decoded-a-novel-kindle-edition.pdf
    • http://www.gorillawalker.com/holier-than-thou-the-tome-of-bill-unabridged-audible-audio.pdf
    • http://www.gorillawalker.com/teachings-from-the-angelic-messenger-cards.pdf
    • http://www.gorillawalker.com/the-design-of-machine-elements.pdf
    • http://www.gorillawalker.com/earl-anthony-s-championship-bowling.pdf
    • http://www.gorillawalker.com/unyong-jon-a-love-affair-at-the-royal-palace-of.pdf
    • http://www.gorillawalker.com/instrumentation-for-the-operating-room-a-photographic-manual-9e.pdf
    • http://www.gorillawalker.com/this-is-luther.pdf
    • http://www.gorillawalker.com/fundamentals-of-color-shade-matching-and-communication-in-esthetic-dentistry.pdf
    • http://www.gorillawalker.com/picked-up-at-the-bar-by-a-girl-a-first.pdf
    • http://www.gorillawalker.com/gay-well-hung-bundle-well-hung-gay-erotica-well-hung.pdf
    • http://www.gorillawalker.com/elmo-s-mommy-sesame-street-sesame-street-board-books.pdf
    • http://www.gorillawalker.com/ceremonial-fanfare-for-brass-and-percussion.pdf
    • http://www.gorillawalker.com/la-huerta-de-manzanas-the-apple-orchard-una-visita-a.pdf
    • http://www.gorillawalker.com/medicine-magic-and-religion-the-fitz-patrick-lectures-delivered-before.pdf
    • http://www.gorillawalker.com/derrick-rose-people-in-the-news.pdf
    • http://www.gorillawalker.com/good-manners-in-public-good-manners-matter-library-binding.pdf
    • http://www.gorillawalker.com/the-identification-and-treatment-of-gait-problems-in-cerebral-palsy.pdf
    • http://www.gorillawalker.com/wordly-wise-3000-grade-10-book-7.pdf
    • http://www.gorillawalker.com/sinner-paradise-series-book-3-the-books-of-history-chronicles.pdf
    • http://www.gorillawalker.com/incidents-of-travel-in-greece-turkey-russia-and-poland-volume.pdf
    • http://www.gorillawalker.com/renewable-energy-annexes-on-energy-from-waste-combustion-hydro-power.pdf
    • http://www.gorillawalker.com/merrill-chemistry-teacher-s-wraparound-edition-new-south-wales-series.pdf
    • http://www.gorillawalker.com/standing-by-the-ruins-elegiac-humanism-in-wartime-and-postwar.pdf
    • http://www.gorillawalker.com/drum-atlas-brazil-your-passport-to-a-new-world-of.pdf
    • http://www.gorillawalker.com/unfinished-errand-into-the-wilderness-tendenzen-und-schwerpunkte-der-homiletik.pdf
    • http://www.gorillawalker.com/the-saturday-walk-a-forced-femme-sissy-streetwalker-fantasy.pdf
    • http://www.gorillawalker.com/making-using-vinegar-recipes-that-celebrate-vinegar-s-versatility-a.pdf
    • http://www.gorillawalker.com/bonne-chance-building-a-life-in-rural-france.pdf
    • http://www.gorillawalker.com/the-flaming-heart-essays-on-crashaw-machiavelli-and-other-studies.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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