Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1f94e23f00138d…

MALICIOUS

PDF

46.4 KB Created: 2018-11-25 20:18:09 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 10.1.2 (Windows))
MD5: bbd1c1b25ec79851df083bb1000eec8c SHA-1: 7f23cf3b5f616892d022e10edffb53e81ef69b8c SHA-256: 7b1f94e23f00138dc3aba9fc0a79226c41ffb91c915e2b65fd659860491bab65
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8263

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/infranomics-sustainability-engineering-design-and-governance-topics-in-safety-risk.pdf
    • http://www.gorillawalker.com/hack-proofing-sun-solaris-8.pdf
    • http://www.gorillawalker.com/social-workers-and-volunteers.pdf
    • http://www.gorillawalker.com/el-misterio-del-matrimonio-spanish-edition.pdf
    • http://www.gorillawalker.com/south-western-federal-taxation-2014-taxation-of-business-entities-professional.pdf
    • http://www.gorillawalker.com/how-to-play-chess-the-ultimate-chess-for-beginners-guide.pdf
    • http://www.gorillawalker.com/cooking-and-curing-with-mexican-herbs-recipes-and-remedies-gathered.pdf
    • http://www.gorillawalker.com/illinois-court-rules-and-procedure-2008-state-rules.pdf
    • http://www.gorillawalker.com/oahu-hawaii-dive-guide-franko-maps-waterproof-map-map.pdf
    • http://www.gorillawalker.com/fluid-power-with-applications-5th-edition.pdf
    • http://www.gorillawalker.com/the-wreath-of-wild-olive-play-liminality-and-the-study.pdf
    • http://www.gorillawalker.com/amiculus-a-secret-history-vol-i-roma-aeterna.pdf
    • http://www.gorillawalker.com/living-terraces-in-ethiopia-konso-landscape-culture-and-development-eastern.pdf
    • http://www.gorillawalker.com/futures-trading-anthology-one-volume-1.pdf
    • http://www.gorillawalker.com/series-65-license-exam-manual.pdf
    • http://www.gorillawalker.com/naughty-boys-a-photo-book-kindle-edition.pdf
    • http://www.gorillawalker.com/surveying-for-engineers-english-language-book-society-student-editions.pdf
    • http://www.gorillawalker.com/signs-point-to-yes.pdf
    • http://www.gorillawalker.com/bintou-s-braids.pdf
    • http://www.gorillawalker.com/the-choice-a-fable-of-free-trade-and-protectionism-updated.pdf
    • http://www.gorillawalker.com/century-of-insight-the-twentieth-century-enlightenment-of-the-mind.pdf
    • http://www.gorillawalker.com/texes-principal-068-teacher-certification-test-prep-study-guide-xam.pdf
    • http://www.gorillawalker.com/paracord-how-to-make-the-best-bracelets-lanyards-key-chains.pdf
    • http://www.gorillawalker.com/fractography-current-japanese-materials-research.pdf
    • http://www.gorillawalker.com/linear-algebra-demystified-paperback-2005-author-david-mcmahon.pdf
    • http://www.gorillawalker.com/primate-social-conflict.pdf
    • http://www.gorillawalker.com/the-civil-code-of-the-netherlands-second-edition-revised-code.pdf
    • http://www.gorillawalker.com/clinical-anatomy-and-management-of-cervical-spine-pain-clinical-anatomy.pdf
    • http://www.gorillawalker.com/african-game-trails-an-account-of-the-african-wanderings-of.pdf
    • http://www.gorillawalker.com/avalanche-dynamics-dynamics-of-rapid-flows-of-dense-granular-avalanches.pdf
    • http://www.gorillawalker.com/the-power-of-positive-idiocy-kindle-edition.pdf
    • http://www.gorillawalker.com/coherence-the-right-drivers-in-action-for-schools-districts-and.pdf
    • http://www.gorillawalker.com/mimes-on-miming.pdf
    • http://www.gorillawalker.com/fundamentals-of-hydraulic-engineering-systems-4th-edition.pdf
    • http://www.gorillawalker.com/dim-sum-desserts-kindle-edition.pdf
    • http://www.gorillawalker.com/just-me-and-my-three-sons-kindle-edition.pdf
    • http://www.gorillawalker.com/practical-software-testing-a-process-oriented-approach-springer-professional-computing.pdf
    • http://www.gorillawalker.com/fortune-s-folly-outer-bounds.pdf
    • http://www.gorillawalker.com/conservation-of-natural-resources-some-african-asian-examples.pdf
    • http://www.gorillawalker.com/die-kleine-kapitalistensau-german-edition.pdf
    • http://www.gorillawalker.com/south-western-federal-taxation-2014-taxation-of-business-entities-professiona
    • 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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