Malicious PDF — malware analysis report

Static analysis result for SHA-256 a473bb7ad81cee1f…

MALICIOUS

PDF

43.1 KB Created: 2019-04-01 15:12:23 +03:00 Authoring application: -
MD5: fcbda62ad158b4e579e4b8d96a562190 SHA-1: 5fa6a52429974cb01e34df7a955bbc562fac882d SHA-256: a473bb7ad81cee1f4264cd13775364fd683646da36429add00dd62846ed4ad7c
90 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. These links point to various PDF files hosted on www.gorillawalker.com. The ML classifier also flagged this PDF as malicious. The document body was heavily obfuscated and did not provide further insight into the specific lure, but the link farm suggests an attempt to drive traffic or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8224

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/little-mary-sunshine-a-new-musical-vocal-score-book-music.pdf
    • http://www.gorillawalker.com/castlevania-symphony-of-the-night-bradygames-strategy-guide.pdf
    • http://www.gorillawalker.com/why-china-will-never-rule-the-world-travels-in-the.pdf
    • http://www.gorillawalker.com/high-school-curriculum-standard-textbook-a-teachers-of-mathematics-elective.pdf
    • http://www.gorillawalker.com/the-hoax-l-imbroglio-italian-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/introduction-to-security-management-punishment-law-paperback.pdf
    • http://www.gorillawalker.com/basic-chemistry-7th-edition.pdf
    • http://www.gorillawalker.com/the-vulgar-tongue-green-s-history-of-slang.pdf
    • http://www.gorillawalker.com/ecos-argentinos-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/breathe-life-into-your-life-story-how-to-write-a.pdf
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    • http://www.gorillawalker.com/2000-the-year-in-pop-music-piano-vocal-chords.pdf
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    • http://www.gorillawalker.com/foxfire-nine-tails-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/cognitive-behaviour-therapy-foundations-for-practice.pdf
    • http://www.gorillawalker.com/maquillaje-de-aerograf.pdf
    • http://www.gorillawalker.com/scotland-aa-cycling-in.pdf
    • http://www.gorillawalker.com/sent-leader-guide-delivering-the-gift-of-hope-at-christmas.pdf
    • http://www.gorillawalker.com/the-history-of-the-sudarium-of-oviedo-how-it-came.pdf
    • http://www.gorillawalker.com/dancing-in-the-wind-kindle-edition.pdf
    • http://www.gorillawalker.com/coronation-street-unofficial-weekly-updates-2007-kindle-edition.pdf
    • http://www.gorillawalker.com/real-time-futures-trading-how-to-use-price-volume-and.pdf
    • http://www.gorillawalker.com/the-billionaire-s-big-stick-bwwm-interracial-romance-kindle-kindle.pdf
    • http://www.gorillawalker.com/general-relativity-an-introduction-for-physicists.pdf
    • http://www.gorillawalker.com/the-hiker-s-guide-to-arizona-a-falcon-guide.pdf
    • http://www.gorillawalker.com/coping-with-risk-in-agriculture-cabi.pdf
    • http://www.gorillawalker.com/easy-guide-to-osces-for-final-year-medical-students-masterpass.pdf
    • http://www.gorillawalker.com/it-s-your-time-activate-your-faith-accomplish-your-dreams.pdf
    • http://www.gorillawalker.com/contemptible-a-soldier-s-tale-of-the-great-war-ww1.pdf
    • http://www.gorillawalker.com/encyclopaedia-of-mathematics-encyclopaedia-of-mathematics-10-volume-set.pdf
    • http://www.gorillawalker.com/mediterranean-slow-cooker-looking-for-an-easy-way-to-improve.pdf
    • http://www.gorillawalker.com/the-librarian-s-guide-to-graphic-novels-for-adults.pdf
    • http://www.gorillawalker.com/higher-order-motor-disorders-from-neuroanatomy-and-neurobiology-to-clinical.pdf
    • http://www.gorillawalker.com/cry-of-the-benu-bird-an-egyptian-creation-story.pdf
    • http://www.gorillawalker.com/crushed-velvet-book-three-bbw-cowboy-erotic-romance-kindle-edition.pdf
    • http://www.gorillawalker.com/ellen-ochoa-reach-for-the-stars-defining-moments.pdf
    • http://www.gorillawalker.com/a-history-of-russian-cinema.pdf
    • http://www.gorillawalker.com/graph-classes-a-survey-monographs-on-discrete-mathematics-and-applications.pdf
    • http://www.gorillawalker.com/introduction-to-security-managemen
    • 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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