Malicious PDF — malware analysis report

Static analysis result for SHA-256 512348bac34e0bf8…

MALICIOUS

PDF

44.2 KB Created: 2018-12-02 20:17:49 +03:00 Authoring application: PScript5.dll Version 5.2 (via Acrobat Distiller 8.0.0 (Windows))
MD5: 7cf108cf2f1c3e9febeda9b8a2d7c0e5 SHA-1: 79ff9dfdef922fce93b8e7af6c7e05dd338fec35 SHA-256: 512348bac34e0bf8a93f957bc659589a00f3ec55e7d6767f8742f100cb243a5d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. This suggests the document is part of a link farm or SEO manipulation scheme. The ML classifier also flagged the PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8824

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/opere-vol-1-studi-psichiatrici-italian-edition.pdf
    • http://www.gorillawalker.com/little-minnesota-100-towns-around-100.pdf
    • http://www.gorillawalker.com/hindu-art.pdf
    • http://www.gorillawalker.com/athens-with-kids-and-not-only.pdf
    • http://www.gorillawalker.com/indigenous-fruit-trees-in-the-tropics-domestication-utillization-and-commercialization.pdf
    • http://www.gorillawalker.com/the-backwoods.pdf
    • http://www.gorillawalker.com/credit-smart-your-step-by-step-guide-to-establishing-or.pdf
    • http://www.gorillawalker.com/north-american-indians-and-alaska-natives-abstracts-of-the-psychological.pdf
    • http://www.gorillawalker.com/between-giants-the-battle-for-the-baltics-in-world-war.pdf
    • http://www.gorillawalker.com/sink-into-sleep-a-step-by-step-workbook-for-insomnia.pdf
    • http://www.gorillawalker.com/toward-a-female-genealogy-of-transcendentalism.pdf
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    • http://www.gorillawalker.com/get-started-in-portuguese-absolute-beginner-course-the-essential-introduction.pdf
    • http://www.gorillawalker.com/sheer-city-young-naked-women-autumn-belle-plays-in-bed.pdf
    • http://www.gorillawalker.com/civil-engineering-engineering-economics-engineering-press-at-oup.pdf
    • http://www.gorillawalker.com/a-photographic-atlas-of-histology-by-michael-j-leboffe-2003.pdf
    • http://www.gorillawalker.com/selected-prose-1934-1996.pdf
    • http://www.gorillawalker.com/4-album-leaves-op-28-for-solo-piano.pdf
    • http://www.gorillawalker.com/trans-himalaya-discoveries-and-adventures-in-tibet.pdf
    • http://www.gorillawalker.com/ulysses-in-hand-the-rosenbach-manuscript.pdf
    • http://www.gorillawalker.com/cyclopedia-of-applied-electricity-a-general-reference-work-on-direct.pdf
    • http://www.gorillawalker.com/john-stuart-mill-on-liberty-longman-library-of-primary-sources.pdf
    • http://www.gorillawalker.com/the-bard-of-blood-kindle-edition.pdf
    • http://www.gorillawalker.com/stories-of-the-prophets.pdf
    • http://www.gorillawalker.com/arctic-migrants-arctic-villagers-the-transformation-of-inuit-settlement-in.pdf
    • http://www.gorillawalker.com/alkhati2a-the-sin-riwayat-ayyoub-volume-4-arabic-edition.pdf
    • http://www.gorillawalker.com/houses-of-new-orleans.pdf
    • http://www.gorillawalker.com/fast-into-the-night-a-woman-her-dogs-and-their.pdf
    • http://www.gorillawalker.com/mounted-by-a-monster-the-complete-demon-stories-paranormal-boxed.pdf
    • http://www.gorillawalker.com/the-last-jews-of-kerala-the-two-thousand-year-history.pdf
    • http://www.gorillawalker.com/introduction-to-vedic-knowledge-volume-4-the-secondary-vedas.pdf
    • http://www.gorillawalker.com/me-we-and-glee-how-to-have-a-great-attitude.pdf
    • http://www.gorillawalker.com/the-institutes-of-vishnu-kindle-edition.pdf
    • http://www.gorillawalker.com/the-history-of-the-county-of-bruce-and-of-the.pdf
    • http://www.gorillawalker.com/seascape-other-poems.pdf
    • http://www.gorillawalker.com/shifting-out-of-park.pdf
    • http://www.gorillawalker.com/the-legend-of-dr-j.pdf
    • http://www.gorillawalker.com/tripura.pdf
    • http://www.gorillawalker.com/forever-in-the-shadow-of-hitler.pdf
    • http://www.gorillawalker.com/der-rheinfall-erhabene-natur-und-touristische-vermarktung-german-edition.pdf
    • http://www.gorillawalker.com/between-giants-the-
    • 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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