Malicious PDF — malware analysis report

Static analysis result for SHA-256 88dafdb012afb559…

MALICIOUS

PDF

43.0 KB Created: 2018-12-02 20:18:08 +03:00 Authoring application: ZonBook XSL Stylesheets with Apache FOP (via Apache FOP Version 2.1)
MD5: a2879b79cdc19d0bcad8c56bb9bc8c14 SHA-1: 7cb94d0ad033a37d47e9db77a0355dc3dde2b017 SHA-256: 88dafdb012afb559a86c7c3d3fbb601063175cbd8a0f78bc77108f96001c4ef9
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier as malicious. Static analysis revealed a PDF_SEO_LINK_FARM heuristic, indicating the document contains a large number of external links. The document body, though heavily obfuscated, contains numerous URLs pointing to various PDF files on the domain 'gorillawalker.com'. This suggests the primary purpose is to drive traffic to these external resources, potentially for SEO manipulation or as a distribution point for other malicious content.

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/nebuchadrezzar-and-babylon-schweich-lectures-on-biblical-archaeology.pdf
    • http://www.gorillawalker.com/herpes-facts-not-fiction-a-survival-guide-and-cure-treatment.pdf
    • http://www.gorillawalker.com/reading-architectural-working-drawings-residential-and-light-construction-5th-edition.pdf
    • http://www.gorillawalker.com/mental-gymnastics-or-lessons-on-memory-fourth-edition.pdf
    • http://www.gorillawalker.com/finishing-well-home-schooling-your-high-school-student.pdf
    • http://www.gorillawalker.com/james-madison-rules-america-the-constitutional-origins-of-congressional-partisanship.pdf
    • http://www.gorillawalker.com/un-monje-en-wall-street-empresa-plataforma-spanish-edition-kindle.pdf
    • http://www.gorillawalker.com/the-presidential-veto-touchstone-of-the-american-presidency-suny-series.pdf
    • http://www.gorillawalker.com/war-the-transformation-of-british-society-1931-1951-gcse-modern.pdf
    • http://www.gorillawalker.com/being-in-pain.pdf
    • http://www.gorillawalker.com/it-strategy-and-management.pdf
    • http://www.gorillawalker.com/auto-da-sibila-cassandra-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/author-best-job-ever.pdf
    • http://www.gorillawalker.com/mystery-reader-s-walking-guide-washington-d-c.pdf
    • http://www.gorillawalker.com/la-vuelta-de-mart-n-fierro-spanish-edition.pdf
    • http://www.gorillawalker.com/myth-truth-and-narrative-in-herodotus.pdf
    • http://www.gorillawalker.com/construction-safety-management-a-systems-approach.pdf
    • http://www.gorillawalker.com/andrei-tarkovsky-a-photographic-chronicle-of-the-making-of-the.pdf
    • http://www.gorillawalker.com/yearning-to-be-one-spiritual-dialogue-between-catholics-and-united.pdf
    • http://www.gorillawalker.com/student-solutions-manual-for-aufmann-lockwood-s-basic-college-math.pdf
    • http://www.gorillawalker.com/epic-trips-of-the-west-tom-stienstra-s-ten-best.pdf
    • http://www.gorillawalker.com/between-kant-hegel-texts-in-the-development-of-post-kantian.pdf
    • http://www.gorillawalker.com/lydia-ginzburg-s-alternative-literary-identities-a-collection-of-articles.pdf
    • http://www.gorillawalker.com/artificial-southerner-equivocations-and-love-songs.pdf
    • http://www.gorillawalker.com/the-horn-handbook.pdf
    • http://www.gorillawalker.com/auto-immunity-in-the-endocrine-system-monographs-on-endocrinology.pdf
    • http://www.gorillawalker.com/birds-a-portrait-in-pictures-and-words.pdf
    • http://www.gorillawalker.com/fifty-two-steps-underground-an-autobiography-of-a-miner.pdf
    • http://www.gorillawalker.com/you-can-write-an-essay.pdf
    • http://www.gorillawalker.com/an-element-of-peril-peter-sharp-legal-mystery-10.pdf
    • http://www.gorillawalker.com/handel-royal-fireworks-musick-arranged-for-piano-solo-by-granville.pdf
    • http://www.gorillawalker.com/a-japanese-touch-for-your-home.pdf
    • http://www.gorillawalker.com/the-fox-and-the-grapes-a-retelling-of-aesop-s.pdf
    • http://www.gorillawalker.com/by-globetrotter-botswana-travel-map-globetrotter-travel-map-seventh-edition.pdf
    • http://www.gorillawalker.com/network-security-a-beginner-s-guide-third-edition.pdf
    • http://www.gorillawalker.com/la-mia-venezia-italian-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/lecciones-b-blicas-creativas-los-reyes-especialidades-juveniles-lecciones-b.pdf
    • http://www.gorillawalker.com/doctor-who-heros-and-monsters-collection.pdf
    • http://www.gorillawalker.com/information-security-and-it-risk-management.pdf
    • http://www.gorillawalker.com/legal-services-corporation-1982-oversight-hearing-before-the-subcommittee-on.pdf
    • http://www.gorillawalker.com/the-presidential-veto-touchstone-of-the-american-pres
    • 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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