Malicious PDF — malware analysis report

Static analysis result for SHA-256 dada9d816b38365f…

MALICIOUS

PDF

35.0 KB Created: 2020-01-10 17:21:08 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 7.0.5 (Windows))
MD5: 74e2062f1cae6753c970be662ff8fff5 SHA-1: 2ba7d4100e2ebb96636fdb6d40235c04462abf5c SHA-256: dada9d816b38365f6aaab77cbfe1fc6310649b5172d183d2680187299b3b964b
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, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this document as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of its specific intent beyond link distribution.

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/guerra-mexico-americana-a-mis-queridas-hijas-josefa-read-de.pdf
    • http://www.gorillawalker.com/una-muerte-sencilla-justa-eterna-cultura-y-guerra-durante-la.pdf
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    • http://www.gorillawalker.com/nights-in-the-gardens-of-brooklyn-short-story-index-reprint.pdf
    • http://www.gorillawalker.com/elemente-optischer-netze-grundlagen-und-praxis-der-optischen-daten-bertragung.pdf
    • http://www.gorillawalker.com/the-text-of-the-new-testament-its-transmission-corruption-and.pdf
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    • http://www.gorillawalker.com/amphibians-reptiles-of-yellowstone-and-grand-teton-national-parks.pdf
    • http://www.gorillawalker.com/ministries-a-relational-approach.pdf
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    • http://www.gorillawalker.com/orientation-to-college-learning.pdf
    • http://www.gorillawalker.com/like-underground-water-the-poetry-of-mid-twentieth-century-japan.pdf
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    • http://www.gorillawalker.com/analog-electronic-circuits-analysis-and-applications-addison-wesley-series-in.pdf
    • http://www.gorillawalker.com/kireinakofotobukkupuremiamusannjyuunitennsann-japanese-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/anecdotes-in-the-varakari-kirtana-folk-tradition-of-maharastra-beitr.pdf
    • http://www.gorillawalker.com/book-that-will-make-you-love-books-even-if-you.pdf
    • http://www.gorillawalker.com/the-brothers-of-gwy
    • 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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