Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4b29be7a3f8ca6…

MALICIOUS

PDF

43.5 KB Created: 2018-12-15 20:06:19 +03:00 Authoring application: - (via Acrobat Distiller 10.1.10 (Windows))
MD5: 48f3c7b30083b72f2a09d72ccefc3820 SHA-1: 3b8aa9659542f26ab91e7ad955de05f485bc97f7 SHA-256: 1d4b29be7a3f8ca6877148f30d33465b5a437ff19bf6b6d2d21603cada53db74
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. A critical heuristic identified a large number of external PDF links within the document, all pointing to the same domain (www.gorillawalker.com). This suggests a link farm or a distribution mechanism for further malicious content, potentially disguised as book downloads. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the immediate payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8859

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/uncaged-shifter-s-uprising-book-1.pdf
    • http://www.gorillawalker.com/the-green-smoothie-miracle-your-way-to-increased-energy-weight.pdf
    • http://www.gorillawalker.com/model-reduction-for-circuit-simulation-lecture-notes-in-electrical-engineering.pdf
    • http://www.gorillawalker.com/powered-on.pdf
    • http://www.gorillawalker.com/the-encyclopedia-of-writing-and-illustrating-children-s-books-from.pdf
    • http://www.gorillawalker.com/clinical-nursing-skills-and-techniques-text-and-mosby-s-nursing.pdf
    • http://www.gorillawalker.com/integrated-mathematics-course-ii.pdf
    • http://www.gorillawalker.com/national-geographic-july-1987-vol-172-no-1.pdf
    • http://www.gorillawalker.com/flattening-the-earth-two-thousand-years-of-map-projections.pdf
    • http://www.gorillawalker.com/crude-oil-waxes-emulsions-and-asphaltenes.pdf
    • http://www.gorillawalker.com/soul-life-times-music-book-cd-series.pdf
    • http://www.gorillawalker.com/detox-diets-secrets-ultimate-beginner-s-guide.pdf
    • http://www.gorillawalker.com/essential-finance-series-investing-basics.pdf
    • http://www.gorillawalker.com/the-ultimate-beer-lovers-cookbook-more-than-400-recipes-that.pdf
    • http://www.gorillawalker.com/move-up-por-qu-alguna-culturas-avanzan-y-otras-no.pdf
    • http://www.gorillawalker.com/quince-de-nuevo-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/hondos-los-suspiros-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/journey-of-praise.pdf
    • http://www.gorillawalker.com/protecting-your-intellectual-property-rights-kindle-edition.pdf
    • http://www.gorillawalker.com/hoosier-hospitality-favorite-recipes-from-indiana-s-finest-bed-breakfast.pdf
    • http://www.gorillawalker.com/understanding-bible-prophecy-for-yourself-tim-lahaye-prophecy-library.pdf
    • http://www.gorillawalker.com/penelope-vintage-contemporaries.pdf
    • http://www.gorillawalker.com/neptune-noir-unauthorized-investigations-into-veronica-mars-smart-pop-series.pdf
    • http://www.gorillawalker.com/lives-o9f-the-hunted.pdf
    • http://www.gorillawalker.com/the-successful-single-mother-proven-strategies-for-creating-an-incredible.pdf
    • http://www.gorillawalker.com/despues-de-damasco-el-apostol-pablo-desde-una-perspectiva-latina.pdf
    • http://www.gorillawalker.com/radiologia-pediatrica-spanish-edition.pdf
    • http://www.gorillawalker.com/short-ride-to-hell.pdf
    • http://www.gorillawalker.com/federalism-on-trial-state-attorneys-general-and-national-policymaking-in.pdf
    • http://www.gorillawalker.com/urban-commons-moving-beyond-state-and-market-bauwelt-fundamente.pdf
    • http://www.gorillawalker.com/the-baptist-hymnal-a-collection-of-hymns-and-spiritual-songs.pdf
    • http://www.gorillawalker.com/a-quantum-mythology.pdf
    • http://www.gorillawalker.com/grand-chapter-of-royal-arch-masons-constitution-of-the-grand.pdf
    • http://www.gorillawalker.com/der-experimentator-immunologie-german-edition.pdf
    • http://www.gorillawalker.com/helping-students-write-the-best-research-reports-ever-grades-4.pdf
    • http://www.gorillawalker.com/more-welcome-speeches-responses-for-all-occasions.pdf
    • http://www.gorillawalker.com/united-states-history-civil-war-to-present-student-edition-2009.pdf
    • http://www.gorillawalker.com/cliffstestprep-nystce-multi-subject-content-specialty-test-cst.pdf
    • http://www.gorillawalker.com/schumann-s-piano-cycles-and-the-novels-of-jean-paul.pdf
    • 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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