Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a409ab518b3cae7…

MALICIOUS

PDF

44.2 KB Created: 2018-11-15 18:31:52 +03:00 Authoring application: Microsoft Word (via Mac OS X 10.6.8 Quartz PDFContext)
MD5: 5015276bc826f53238be4ef36c0f8477 SHA-1: 5a37e8f230f8078cecee6a753beb3ed9ed3468d7 SHA-256: 6a409ab518b3cae73fcfa17142a9be8a8e66e7809733343c95d3ab65a3daf3c3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a heuristic firing indicating a large number of embedded external links, suggesting a link farm or distribution mechanism. While no scripts were extracted, the sheer volume of links points towards an attempt to manipulate search engine results or redirect users to potentially malicious content. The ML classifier also flagged the document as malicious.

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/single-men-are-like-waffles-single-women-are-like-spaghetti.pdf
    • http://www.gorillawalker.com/the-new-hide-or-seek-building-confidence-in-your-child.pdf
    • http://www.gorillawalker.com/master-the-boards-pediatrics.pdf
    • http://www.gorillawalker.com/wild-things-mega-bytes.pdf
    • http://www.gorillawalker.com/the-day-after-roswell-kindle-edition.pdf
    • http://www.gorillawalker.com/how-does-the-drill-know-when-to-stop-living-gracefully.pdf
    • http://www.gorillawalker.com/no-passport-a-discovery-of-canada.pdf
    • http://www.gorillawalker.com/robin-hood-book-myths-and-legends.pdf
    • http://www.gorillawalker.com/the-governess-affair-the-brothers-sinister.pdf
    • http://www.gorillawalker.com/2014-disney-cars-calendar.pdf
    • http://www.gorillawalker.com/beginning-biographies-hispanic-americans-cesar-chavez-six-pack.pdf
    • http://www.gorillawalker.com/bistatic-radar-principles-and-practice.pdf
    • http://www.gorillawalker.com/making-minds-how-theory-of-mind-develops-oxford-series-in.pdf
    • http://www.gorillawalker.com/architectural-graphic-standards-abridged-student-edition-9th-edition.pdf
    • http://www.gorillawalker.com/101-artistic-relief-patterns-for-woodcarvers-woodburners-crafters-woodcarving-illustrated.pdf
    • http://www.gorillawalker.com/adventure-guide-to-tampa-bay-florida-s-west-coast.pdf
    • http://www.gorillawalker.com/kinsey-sex-the-measure-of-all-things.pdf
    • http://www.gorillawalker.com/kids-knitting-projects-for-kids-of-all-ages.pdf
    • http://www.gorillawalker.com/digital-rights-management-technologies-issues-challenges-and-systems-lecture-notes.pdf
    • http://www.gorillawalker.com/this-was-yesterday.pdf
    • http://www.gorillawalker.com/inward-thoughts-and-outward-expressions-inward-thoughts-and-outward-expressions.pdf
    • http://www.gorillawalker.com/plant-systematics-a-phylogenetic-approach-with-cd-rom.pdf
    • http://www.gorillawalker.com/mary-clare-likes-to-share-a-math-reader-step-into.pdf
    • http://www.gorillawalker.com/the-remaining-allegiance.pdf
    • http://www.gorillawalker.com/shakespeare-upstart-crow-to-sweet-swan-1592-1623-arden-shakespeare.pdf
    • http://www.gorillawalker.com/air-conditioning-principles-and-systems.pdf
    • http://www.gorillawalker.com/the-power-of-playing-cards-an-ancient-system-for-understanding.pdf
    • http://www.gorillawalker.com/bl-tenzauber-flowers-flewrs-fiori-2013.pdf
    • http://www.gorillawalker.com/history-of-shit-documents-book.pdf
    • http://www.gorillawalker.com/picture-puzzles-brain-games.pdf
    • http://www.gorillawalker.com/the-art-of-ancient-iran-pre-islamic-cultures-art-of.pdf
    • http://www.gorillawalker.com/caa-region-5-central-england-wales.pdf
    • http://www.gorillawalker.com/grow-your-business-with-cold-emails-everything-you-need-to.pdf
    • http://www.gorillawalker.com/liaden-universe-constellation-volume-iii-baen.pdf
    • http://www.gorillawalker.com/totally-unauthorized-magic-the-gathering-the-unbeatable-deck-can-be.pdf
    • http://www.gorillawalker.com/practical-rabbit-keeping-rabbits-for-pets-and-profit.pdf
    • http://www.gorillawalker.com/structuring-venture-capital-and-mergers-and-acquisitions-set.pdf
    • http://www.gorillawalker.com/american-color-2.pdf
    • http://www.gorillawalker.com/el-martir-del-golgota-uno-de-los-maestros-mas-reconocidos.pdf
    • http://www.gorillawalker.com/english-chinese-terminology-handbook-for-nurses-key-english-chinese-english.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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