Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ddf447f464ecb0…

MALICIOUS

PDF

43.1 KB Created: 2018-11-26 20:03:33 +03:00 Authoring application: Word (via Mac OS X 10.8.5 Quartz PDFContext)
MD5: 6042fe1395d8083ab1c4f00be07a182b SHA-1: e5292365cbbae1e46396d988e622c9b59f5a5b9d SHA-256: a2ddf447f464ecb04d0847ea2624f0a15cbab105761fd9cd21c36cb24b526fee
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files on the domain www.gorillawalker.com. This is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, limiting the ability to determine specific execution techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/family-maps-of-keokuk-county-iowa-deluxe-edition.pdf
    • http://www.gorillawalker.com/a-people-and-a-nation-a-history-of-the-united.pdf
    • http://www.gorillawalker.com/music-at-the-edge-the-music-therapy-experiences-of-a.pdf
    • http://www.gorillawalker.com/love-wins-low-price-cd-a-book-about-heaven-hell.pdf
    • http://www.gorillawalker.com/deadly-little-voices-a-touch-novel.pdf
    • http://www.gorillawalker.com/goodnight-ipad-a-parody-for-the-next-generation-edition-unknown.pdf
    • http://www.gorillawalker.com/an-atlas-of-ophthalmic-trauma.pdf
    • http://www.gorillawalker.com/overstock-com-vs-ebay-online-giants-face-off-techknowledge-an.pdf
    • http://www.gorillawalker.com/practical-software-estimation-function-point-methods-for-insourced-and-outsourced.pdf
    • http://www.gorillawalker.com/massage-mind-and-body.pdf
    • http://www.gorillawalker.com/grasberg-mining-the-richest-and-most-remote-deposit-of-copper.pdf
    • http://www.gorillawalker.com/jane-franklin-s-obsession-exploring-the-frozen-north.pdf
    • http://www.gorillawalker.com/the-diamond-age-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/fit-well-core-concepts-and-labs-in-physical-fitness-and.pdf
    • http://www.gorillawalker.com/natural-histories.pdf
    • http://www.gorillawalker.com/robert-devriendt-broken-stories.pdf
    • http://www.gorillawalker.com/wrote-the-book-made-the-movie-raised-the-kids-now.pdf
    • http://www.gorillawalker.com/secrets-of-hollywood-special-effects.pdf
    • http://www.gorillawalker.com/worship-rejoice-hymnal-blue.pdf
    • http://www.gorillawalker.com/d-cookbook.pdf
    • http://www.gorillawalker.com/blown-away-the-final-chapter-walk-the-right-road-volume.pdf
    • http://www.gorillawalker.com/the-canons-of-our-fathers-monastic-rules-of-shenoute-oxford.pdf
    • http://www.gorillawalker.com/nuclear-magnetic-resonance-petrophysical-and-logging-applications-handbook-of-geophysical.pdf
    • http://www.gorillawalker.com/from-subjects-to-subjectivities-a-handbook-of-interpretive-and-participatory.pdf
    • http://www.gorillawalker.com/creative-writing-for-counselors-and-their-clients.pdf
    • http://www.gorillawalker.com/welcome-to-death-row-the-uncensored-history-of-suge-knight.pdf
    • http://www.gorillawalker.com/from-china-to-peru-a-memoir-of-travel.pdf
    • http://www.gorillawalker.com/uncover-a-race-car-an-uncover-it-book-hardcover.pdf
    • http://www.gorillawalker.com/technological-change-in-postharvest-handling-and-transportation-of-grains-in.pdf
    • http://www.gorillawalker.com/men-law-and-gender-essays-on-the-man-of-law.pdf
    • http://www.gorillawalker.com/understanding-menopause-answers-advice-for-women-in-the-prime-of.pdf
    • http://www.gorillawalker.com/nightingale-s-song-beautiful-dead.pdf
    • http://www.gorillawalker.com/little-known-tropical-diseases.pdf
    • http://www.gorillawalker.com/a-sociological-theory-of-law-glasshouse-books.pdf
    • http://www.gorillawalker.com/by-the-light-of-the-moon-rise-of-the-arkansas.pdf
    • http://www.gorillawalker.com/facilities-technology-planning-section-b.pdf
    • http://www.gorillawalker.com/le-chat-illustr.pdf
    • http://www.gorillawalker.com/17-daily-exercises-by-taffanel-and-gaubert-17-grands-exercises.pdf
    • http://www.gorillawalker.com/archaeology-of-oceania-australia-and-the-pacific-islands.pdf
    • http://www.gorillawalker.com/fantaisie-op-89-for-soprano-saxophone-and-piano.pdf
    • http://www.gorillawalker.com/overstock-com-vs-ebay-
    • 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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