Malicious PDF — malware analysis report

Static analysis result for SHA-256 c52a2670e2b75de3…

MALICIOUS

PDF

43.7 KB Created: 2019-03-18 18:16:22 +03:00 Authoring application: calibre 0.9.13 [http://calibre-ebook.com]
MD5: 360fd3a191295d3e053e814594b5584f SHA-1: 4267ec0f8fe4983ec57b58cf44522571794175ba SHA-256: c52a2670e2b75de37708dd46a0147670505a0169435ed12a922de1363878bbc0
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF documents on the domain www.gorillawalker.com. The ML classifier also flagged this PDF as malicious. The primary attack pattern appears to be SEO manipulation or a link farm designed to drive traffic to external resources, potentially for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8452

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/1001-grunnleggende-fraser-norsk-islandsk-norwegian-edition.pdf
    • http://www.gorillawalker.com/dictionary-of-medical-derivations-the-real-meaning-of-medical-terms.pdf
    • http://www.gorillawalker.com/afghan-cuisine-cooking-for-life-a-collection-of-afghan-recipes.pdf
    • http://www.gorillawalker.com/fodor-s-belize-with-a-side-trip-to-guatemala-full.pdf
    • http://www.gorillawalker.com/stunning-garnishes-cook-s-essentials.pdf
    • http://www.gorillawalker.com/understanding-disney-the-manufacture-of-fantasy.pdf
    • http://www.gorillawalker.com/last-one-in-is-a-rotten-egg-book-and-tape.pdf
    • http://www.gorillawalker.com/a-love-affair-with-the-sun-a-memoir-of-seventy.pdf
    • http://www.gorillawalker.com/faith-hope-charity-a-novel-of-virtue-and-vice-kindle.pdf
    • http://www.gorillawalker.com/lion-s-woman-the.pdf
    • http://www.gorillawalker.com/lighting-design-handbook.pdf
    • http://www.gorillawalker.com/super-mario-3d-world-collector-s-edition-prima-official-game.pdf
    • http://www.gorillawalker.com/top-30-nutritious-recommended-australian-salad-recipes-kindle-edition.pdf
    • http://www.gorillawalker.com/rand-mcnally-2004-chicago-and-cook-county-street-guide-rand.pdf
    • http://www.gorillawalker.com/get-talking-russian-in-ten-days-beginner-audio-course-the.pdf
    • http://www.gorillawalker.com/black-clouds-and-bright-blessings-sermons-on-ecclesiastes-spurgeon-through.pdf
    • http://www.gorillawalker.com/satisfaction-guaranteed-the-making-of-the-american-mass-market.pdf
    • http://www.gorillawalker.com/presentation-zen-simple-ideas-on-presentation-design-and-delivery.pdf
    • http://www.gorillawalker.com/how-to-play-rock-n-roll-drums.pdf
    • http://www.gorillawalker.com/family-law-protocol.pdf
    • http://www.gorillawalker.com/i-am-soldier-war-stories-from-the-ancient-world-to.pdf
    • http://www.gorillawalker.com/body-structures-and-functions.pdf
    • http://www.gorillawalker.com/wandering-spirits-chen-shiyuan-s-encyclopedia-of-dreams.pdf
    • http://www.gorillawalker.com/exotic-animals-contemporary-issues-in-small-animal-practice-volume-9.pdf
    • http://www.gorillawalker.com/south-park-conservatives-the-revolt-against-liberal-media-bias.pdf
    • http://www.gorillawalker.com/the-messianic-aleph-tav-scriptures-modern-hebrew-study-bible.pdf
    • http://www.gorillawalker.com/freiheit-durch-gold-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/selected-poems-of-laurence-binyon-paperback.pdf
    • http://www.gorillawalker.com/collectible-dietz-lanterns-original-1917-catalog-with-current-prices.pdf
    • http://www.gorillawalker.com/offside-pass-blue-line-hockey-book-1.pdf
    • http://www.gorillawalker.com/drugs-and-sports-drug-abuse-prevention-library.pdf
    • http://www.gorillawalker.com/the-synthetic-organic-chemist-s-companion.pdf
    • http://www.gorillawalker.com/green-screen-glamour-photography-made-easy-how-to-create-beautiful.pdf
    • http://www.gorillawalker.com/the-guardian-duke-forgotten-castles-novels.pdf
    • http://www.gorillawalker.com/rhythms-and-rests-2nd-b-flat-trumpet.pdf
    • http://www.gorillawalker.com/great-source-write-on-track-sourcebook-student-edition.pdf
    • http://www.gorillawalker.com/sophie-in-shadow.pdf
    • http://www.gorillawalker.com/instant-markdown-kindle-edition.pdf
    • http://www.gorillawalker.com/chemical-engineering-practice-volume-11-works-design-etc.pdf
    • http://www.gorillawalker.com/how-to-defend-yourself-in-contempt-of-court-hearings.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://calibre-ebook.com
    • 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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