Malicious PDF — malware analysis report

Static analysis result for SHA-256 4031c227324c82b3…

MALICIOUS

PDF

32.7 KB Created: 2019-11-23 19:29:08 +03:00 Authoring application: Adobe Photoshop 5.0 (via Adobe Photoshop for Windows)
MD5: 05d2027a3914f9836154f71297a7dd2d SHA-1: ef3d291cdfe4a22e69826ee445a3b3381b6902f0 SHA-256: 4031c227324c82b3bf35de85da7d3000ab88abb48ef20d4e308dbc704e59a212
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, indicating a link farm or SEO poisoning attempt. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure. The primary attack pattern observed is the distribution of numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/urban-nightscapes-youth-cultures-pleasure-spaces-and-corporate-power-critical.pdf
    • http://www.gorillawalker.com/suzuki-recorder-school-soprano-recorder-volume-3-recorder-part.pdf
    • http://www.gorillawalker.com/miranda-writes-honor-justice.pdf
    • http://www.gorillawalker.com/geek-magnet.pdf
    • http://www.gorillawalker.com/exceptional-children-and-youth-an-introduction-to-special-education.pdf
    • http://www.gorillawalker.com/the-certified-quality-technician-handbook.pdf
    • http://www.gorillawalker.com/vernonia-school-district-v-acton-drug-testing-in-schools-landmark.pdf
    • http://www.gorillawalker.com/pateando-lunas-kick-up-your-heels-osito-little-bear-spanish.pdf
    • http://www.gorillawalker.com/get-ready-for-rugby-union-a-complete-training-programme.pdf
    • http://www.gorillawalker.com/tracks-in-the-sand-sea-turtles-and-their-protectors-ocean.pdf
    • http://www.gorillawalker.com/wipe-clean-learn-to-write-your-numbers-26-wipe-clean.pdf
    • http://www.gorillawalker.com/principles-of-igneous-petrology.pdf
    • http://www.gorillawalker.com/lions-f-hrte-der-lust-german-edition.pdf
    • http://www.gorillawalker.com/gp451-essential-piano-repertoire-of-the-17th-18th-19th-centuries.pdf
    • http://www.gorillawalker.com/defense-conversion-strategies-nato-science-partnership-subseries-1.pdf
    • http://www.gorillawalker.com/the-lady-s-book-of-manners-how-to-be-a.pdf
    • http://www.gorillawalker.com/trio-of-seduction-seduction-series-book-3.pdf
    • http://www.gorillawalker.com/the-prisoner-and-the-kings-how-one-man-changed-the.pdf
    • http://www.gorillawalker.com/pulp-classics-submarine-stories-magazine-march-1930.pdf
    • http://www.gorillawalker.com/writing-for-the-stage-a-practical-playwriting-guide.pdf
    • http://www.gorillawalker.com/brill-s-encyclopedia-of-hinduism-volume-five-symbolism-diaspora-modern.pdf
    • http://www.gorillawalker.com/inside-earth-teacher-s-edition-prentice-hall-science-explorer.pdf
    • http://www.gorillawalker.com/start-run-a-bed-breakfast-start-and-run-a.pdf
    • http://www.gorillawalker.com/crisis-in-the-gulf-terrorism-documents-of-international-and-local.pdf
    • http://www.gorillawalker.com/romance-guarded-by-the-wolf-werewolf-shifter-paranormal-alpha-mated.pdf
    • http://www.gorillawalker.com/the-kingstone-bible-vol-1-the-beginning-kindle-edition.pdf
    • http://www.gorillawalker.com/self-bondage-fun-kindle-edition.pdf
    • http://www.gorillawalker.com/the-mzungu-boy.pdf
    • http://www.gorillawalker.com/the-ketogenic-cookbook.pdf
    • http://www.gorillawalker.com/categories-in-text-and-talk-a-practical-introduction-to-categorization.pdf
    • http://www.gorillawalker.com/la-femme-en-vert-biblioth-que-nordique-french-edition.pdf
    • http://www.gorillawalker.com/knowledge-intensive-business-services-geography-and-innovation-ashgate-economic-geography.pdf
    • http://www.gorillawalker.com/the-pocket-ken-wilber-shambhala-pocket-classics.pdf
    • http://www.gorillawalker.com/the-psychic-life-of-micro-organisms-a-study-in-experimental.pdf
    • http://www.gorillawalker.com/yoga-journal-2012-calendar.pdf
    • http://www.gorillawalker.com/inmigracion-y-diversidad-cultural-en-mexico-immigration-and-diversity-cultural.pdf
    • http://www.gorillawalker.com/sissy-academy-collection.pdf
    • http://www.gorillawalker.com/embraced-by-the-darkness-exposing-new-age-theology-from-the.pdf
    • http://www.gorillawalker.com/oz-clarke-s-wine-advisor-1995.pdf
    • http://www.gorillawalker.com/andean-tragedy-fighting-the-war-of-the-pacific-1879-1884.pdf
    • http://www.gorilla
    • 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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