Malicious PDF — malware analysis report

Static analysis result for SHA-256 79a4bfa63ad14eb9…

MALICIOUS

PDF

40.0 KB Created: 2019-02-13 19:54:07 +03:00 Authoring application: dvips(k) 5.99 Copyright 2010 Radical Eye Software (via Acrobat Distiller 9.4.5 (Windows))
MD5: 79e5ad973ccc5941004cbf4066588723 SHA-1: 5f433cbb35d8efe3d172b01979b91278e62a4066 SHA-256: 79a4bfa63ad14eb9f9107170c7652c9c7bccae289e23d8980325f6094aeea463
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 further malicious content. While no scripts were explicitly extracted, the PDF structure and the heuristic firings suggest malicious intent. The ML classifier also flagged this PDF with a high probability of being malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8856

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/change-on-the-land-a-hundred-years-of-mechanised-farming.pdf
    • http://www.gorillawalker.com/a-mathematics-sampler-topics-for-the-liberal-arts.pdf
    • http://www.gorillawalker.com/historia-del-mayorazgo-de-chasna-en-la-isla-de-tenerife.pdf
    • http://www.gorillawalker.com/martial-power-warlord-power-cards-a-4th-edition-d-d.pdf
    • http://www.gorillawalker.com/no-easy-day-12-copy-solid-floor-display.pdf
    • http://www.gorillawalker.com/horn-concerto-in-d-major-k-412-386b-full-score.pdf
    • http://www.gorillawalker.com/the-six-secrets-of-raising-capital-an-insider-s-guide.pdf
    • http://www.gorillawalker.com/cooking-healthy-with-a-food-processor-a-healthy-exchanges-cookbook.pdf
    • http://www.gorillawalker.com/3d-printing-projects-20-design-projects-for-your-3d-printer.pdf
    • http://www.gorillawalker.com/the-yearbook-of-urology-1998.pdf
    • http://www.gorillawalker.com/rory-s-promise-hidden-histories.pdf
    • http://www.gorillawalker.com/goon-show-compendium-volume-8-series-8-part-2.pdf
    • http://www.gorillawalker.com/the-season-s-vagrant-light-new-and-selected-poems.pdf
    • http://www.gorillawalker.com/word-of-mouth-a-guide-to-commercial-voice-over-excellence.pdf
    • http://www.gorillawalker.com/mind-brain-and-schizophrenia.pdf
    • http://www.gorillawalker.com/badminton-tutorial-chinese-edition.pdf
    • http://www.gorillawalker.com/who-cares-for-our-children-the-child-care-crisis-in.pdf
    • http://www.gorillawalker.com/css-pocket-reference.pdf
    • http://www.gorillawalker.com/the-big-r-a-forensic-accounting-action-adventure-second-edition.pdf
    • http://www.gorillawalker.com/america-a-view-from-above.pdf
    • http://www.gorillawalker.com/the-muslims-of-thailand.pdf
    • http://www.gorillawalker.com/taming-kat.pdf
    • http://www.gorillawalker.com/plant-growth-regulators-in-agriculture-and-horticulture-their-role-and.pdf
    • http://www.gorillawalker.com/bitcoin-electronic-cash-a-peer-to-peer-kindle-edition.pdf
    • http://www.gorillawalker.com/salzburg-guide.pdf
    • http://www.gorillawalker.com/ceramics-of-picasso.pdf
    • http://www.gorillawalker.com/models-of-a-man-essays-in-memory-of-herbert-a.pdf
    • http://www.gorillawalker.com/little-brats-maya-forbidden-taboo-erotica.pdf
    • http://www.gorillawalker.com/how-to-make-your-child-a-reader-for-life.pdf
    • http://www.gorillawalker.com/dove-exiled-dove-chronicles.pdf
    • http://www.gorillawalker.com/mysterion-a-forbidden-tale-kindle-edition.pdf
    • http://www.gorillawalker.com/the-boy-of-a-thousand-faces.pdf
    • http://www.gorillawalker.com/night-life-nocturne-city-book-1.pdf
    • http://www.gorillawalker.com/chinese-mother-goose-rhymes.pdf
    • http://www.gorillawalker.com/the-firm-box-set.pdf
    • http://www.gorillawalker.com/what-s-missing.pdf
    • http://www.gorillawalker.com/introductory-statistics-for-biology-students.pdf
    • http://www.gorillawalker.com/the-english-utilitarians-v-3.pdf
    • http://www.gorillawalker.com/psalms-1-72-kidner-classic-commentaries.pdf
    • http://www.gorillawalker.com/nasa-s-constellation-program-lessons-learned-volume-i-and-ii.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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