Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7d3f6a61f5ae8e…

MALICIOUS

PDF

41.5 KB Created: 2019-01-06 08:14:39 +03:00 Authoring application: - (via Acrobat Distiller 7.0.5 (Windows))
MD5: fff6682d12ed0ea2a0e5f526a6a35744 SHA-1: a03c4e8bab1234b998ce848cb55b1bff97549d6a SHA-256: cc7d3f6a61f5ae8e1bc31f63fe3c409ba39d35bcaaf665fd08b0a1ed8113f48b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. The embedded URLs point to various PDF documents hosted on the domain 'gorillawalker.com'. No scripts were extracted from this sample. The primary attack pattern appears to be a link farm designed to direct users to numerous external resources.

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/antarctic-odyssey-endurance-and-adventure-in-the-farthest-south.pdf
    • http://www.gorillawalker.com/the-holy-moly-story-bible-exploring-god-s-awesome-word.pdf
    • http://www.gorillawalker.com/unspoken-lies.pdf
    • http://www.gorillawalker.com/new-geographies-1-after-zero-graduate-school-of-design-new.pdf
    • http://www.gorillawalker.com/framing-the-margins-the-social-logic-of-postmodern-culture.pdf
    • http://www.gorillawalker.com/the-challenge-of-restructuring-north-american-labor-movements-respond-labor.pdf
    • http://www.gorillawalker.com/self-knowledge-in-plato-s-phaedrus.pdf
    • http://www.gorillawalker.com/osteoporosis-update-public-health-in-the-21st-century.pdf
    • http://www.gorillawalker.com/the-one-to-one-b2b-customer-relationship-management-strategies-for.pdf
    • http://www.gorillawalker.com/current-issues-in-american-democracy.pdf
    • http://www.gorillawalker.com/institutions-ideologies-and-individuals-feminist-perspectives-on-gender-race-and.pdf
    • http://www.gorillawalker.com/il-trovatore-cloth-it-vocal-score-author-giuseppe-verdi-published.pdf
    • http://www.gorillawalker.com/mapping-time-the-calendar-and-its-history.pdf
    • http://www.gorillawalker.com/a-pianoworks-a-night-at-the-theatre-music-from-operas.pdf
    • http://www.gorillawalker.com/record-grade-book.pdf
    • http://www.gorillawalker.com/understanding-color-an-introduction-for-designers.pdf
    • http://www.gorillawalker.com/unisonal-scales-chords-rhythmic-studies-for-bands-bass-trombone.pdf
    • http://www.gorillawalker.com/society-of-the-spectacle.pdf
    • http://www.gorillawalker.com/khartoum-campaign-1898-or-the-re-conquest-of-the-soudan.pdf
    • http://www.gorillawalker.com/water-topic-books.pdf
    • http://www.gorillawalker.com/corvette-first-gear.pdf
    • http://www.gorillawalker.com/minister-to-the-people.pdf
    • http://www.gorillawalker.com/business-mathematics-and-statistics.pdf
    • http://www.gorillawalker.com/zombie-tales-omnibus-outbreak.pdf
    • http://www.gorillawalker.com/how-to-keep-your-muscle-car-alive-motorbooks-workshop.pdf
    • http://www.gorillawalker.com/rethinking-the-way-we-teach-science-the-interplay-of-content.pdf
    • http://www.gorillawalker.com/ulrich-canale-s-nursing-care-planning-guides-prioritization-delegation-and.pdf
    • http://www.gorillawalker.com/101-great-tropical-drinks-cocktails-coolers-coffees-and-virgin-drinks.pdf
    • http://www.gorillawalker.com/law-machine-3rd-edition.pdf
    • http://www.gorillawalker.com/saving-and-investment-wisdom-a-guide-to-investing-and-personal.pdf
    • http://www.gorillawalker.com/this-amazing-world-poems-and-prayers-of-wonder-and-delight.pdf
    • http://www.gorillawalker.com/the-burton-holmes-lectures-v9-1901.pdf
    • http://www.gorillawalker.com/keep-on-the-shadowfell-dungeons-dragons-adventure-h1.pdf
    • http://www.gorillawalker.com/2014-western-horse-desk-datebook-the-stoecklein-collection.pdf
    • http://www.gorillawalker.com/structured-fortran-77-for-engineers-and-scientists.pdf
    • http://www.gorillawalker.com/aktoren-grundlagen-und-anwendungen-german-edition.pdf
    • http://www.gorillawalker.com/chakras-rays-radionics.pdf
    • http://www.gorillawalker.com/madeline-s-brooch-arousing-conclusions.pdf
    • http://www.gorillawalker.com/mosquito-coast-an-account-of-a-journey-through-the-jungles.pdf
    • http://www.gorillawalker.com/signs-and-emblems-a-collection-of-international-examples-design-graphic.pdf
    • http://www.gorillawalker
    • 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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