Malicious PDF — malware analysis report

Static analysis result for SHA-256 d898f442345b5d5b…

MALICIOUS

PDF

44.5 KB Created: 2019-04-03 18:19:37 +03:00 Authoring application: Acrobat PDFMaker 9.1 для Word (via Adobe PDF Library 9.0)
MD5: f707ea99f870981a20fb74d439c53d6a SHA-1: 6235b9247316630948edd8360aacdb3694ea9164 SHA-256: d898f442345b5d5b279ff0ac59c1f22885f87ab00d77f8b4bbb4d95b48c2743f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. While no scripts were explicitly extracted, the structure suggests an attempt to manipulate search engine results or redirect users to potentially malicious content hosted on the linked domains. The document body itself is heavily obfuscated and contains numerous URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/modern-coding-theory.pdf
    • http://www.gorillawalker.com/basic-spanish-for-getting-along-text-with-in-text-audio.pdf
    • http://www.gorillawalker.com/the-good-samaritans-a-justin-barnes-thriller-kindle-edition.pdf
    • http://www.gorillawalker.com/one-flew-over-the-cuckoo-s-nest-easton-press.pdf
    • http://www.gorillawalker.com/mixed-motives-and-algebraic-k-theory-lecture-notes-in-mathematics.pdf
    • http://www.gorillawalker.com/entrance-fan-painting-class-amazed-gouache-portrait-paperback.pdf
    • http://www.gorillawalker.com/twentieth-century-fox-a-corporate-and-financial-history-the-scarecrow.pdf
    • http://www.gorillawalker.com/free-will-baptist-doctrines.pdf
    • http://www.gorillawalker.com/description-of-the-clergy-in-rural-russia-the-memoir-of.pdf
    • http://www.gorillawalker.com/hieroglyphic-dictionary-a-vocabulary-of-the-middle-egyptian-language.pdf
    • http://www.gorillawalker.com/the-ecology-of-fishes.pdf
    • http://www.gorillawalker.com/die-experimente-des-dr-sartorio-roman-1919-german-edition.pdf
    • http://www.gorillawalker.com/children-s-book-in-polish-my-daddy-is-the-best.pdf
    • http://www.gorillawalker.com/por-una-noche-de-luna-es-culpa-de-la-luna.pdf
    • http://www.gorillawalker.com/baedeker-s-turkey-aa-baedeker-s-maps.pdf
    • http://www.gorillawalker.com/handbook-of-pvc-pipe-design-construction-1st-edition.pdf
    • http://www.gorillawalker.com/the-devil-is-dead.pdf
    • http://www.gorillawalker.com/wind-energy-handbook-by-burton-tony-jenkins-nick-sharpe-david.pdf
    • http://www.gorillawalker.com/parenting-with-stories-creating-a-foundation-of-attachment-for-parenting.pdf
    • http://www.gorillawalker.com/a-voyage-to-terra-australis-undertaken-in-the-years-1801.pdf
    • http://www.gorillawalker.com/military-installation-excellence-project-reporting-kindle-edition.pdf
    • http://www.gorillawalker.com/god-the-economist-the-doctrine-of-god-and-political-economy.pdf
    • http://www.gorillawalker.com/the-comparative-study-bible-a-parallel-bible-presenting-the-niv.pdf
    • http://www.gorillawalker.com/a-lighter-shade-of-blue-weird-wild-and-wacky-cop.pdf
    • http://www.gorillawalker.com/good-boats.pdf
    • http://www.gorillawalker.com/look-at-the-child-an-expression-of-maria-montessori-s.pdf
    • http://www.gorillawalker.com/nanocomposite-membrane-technology-fundamentals-and-applications.pdf
    • http://www.gorillawalker.com/alfred-the-big-easy-mandolin-tab-songbook.pdf
    • http://www.gorillawalker.com/weep-for-the-living.pdf
    • http://www.gorillawalker.com/the-ship-that-wouldn-t-die-the-saga-of-the.pdf
    • http://www.gorillawalker.com/understanding-the-ji-gui-yao-lue-a-comprehensive-textbook.pdf
    • http://www.gorillawalker.com/michelin-the-green-guide-hollande-3e.pdf
    • http://www.gorillawalker.com/a-sculptor-s-testimony-in-bronze-and-stone-the-sacred.pdf
    • http://www.gorillawalker.com/mighty-men-of-valor-with-charlie-company-on-hill-714.pdf
    • http://www.gorillawalker.com/philosophical-perspectives-on-teacher-education-journal-of-philosophy-of-education.pdf
    • http://www.gorillawalker.com/non-functional-requirements-in-software-engineering-international-series-in-software.pdf
    • http://www.gorillawalker.com/graphics-for-engineers-with-autocad-2002-6th-edition.pdf
    • http://www.gorillawalker.com/chinese-new-year-for-kids.pdf
    • http://www.gorillawalker.com/functional-neuroanatomy-of-the-brain-first-part.pdf
    • http://www.gorillawalker.com/journey-to-the-volcano-palace-the-secrets-of-droon-book.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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