Malicious PDF — malware analysis report

Static analysis result for SHA-256 96668545dd427fdd…

MALICIOUS

PDF

42.6 KB Created: 2018-12-15 08:53:29 +03:00 Authoring application: dvips(k) 5.95a Copyright 2005 Radical Eye Software (via AFPL Ghostscript 8.51)
MD5: 7c95f8428334f43de884587e0e2879b2 SHA-1: f19799e93458ee64d78a5ac8acc56679b08a0aa3 SHA-256: 96668545dd427fdd15280ef37dc613a1c569335a095d4b27ce5704ae4e7a9ee3
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/atmospheric-modeling-the-ima-volumes-in-mathematics-and-its-applications.pdf
    • http://www.gorillawalker.com/pigment-compendium-set-pigment-compendium-optical-microscopy-of-historical-pigments.pdf
    • http://www.gorillawalker.com/avenger-s-heat-a-moon-shifter-novel-moon-shifter-series.pdf
    • http://www.gorillawalker.com/traditional-jams-and-preserves-make-your-own-sweet-and-savoury.pdf
    • http://www.gorillawalker.com/team-brass-french-horn-repertoire-team-brass-repertoire-paperback.pdf
    • http://www.gorillawalker.com/chinese-cooking-favorite-recipes.pdf
    • http://www.gorillawalker.com/nicholas-miraculous-the-amazing-career-of-the-redoubtable-dr-nicholas.pdf
    • http://www.gorillawalker.com/astra-s-saga-plundered.pdf
    • http://www.gorillawalker.com/dark-redemption-kindle-edition.pdf
    • http://www.gorillawalker.com/gender-bender-dancers-tg-bundle.pdf
    • http://www.gorillawalker.com/break-me-down-a-novella.pdf
    • http://www.gorillawalker.com/singles-and-doubles-tennis-strategies-winning-tactics-and-mental-strategies.pdf
    • http://www.gorillawalker.com/calvin-and-science-articles-on-calvin-and-calvinism.pdf
    • http://www.gorillawalker.com/margaret-atwood-new-critical-essays-writing-and-subjectivity.pdf
    • http://www.gorillawalker.com/week-by-week-phonics-packets-30-independent-practice-packets-that.pdf
    • http://www.gorillawalker.com/crypto-how-the-code-rebels-beat-the-government-saving-privacy.pdf
    • http://www.gorillawalker.com/treasury-of-tree-lore.pdf
    • http://www.gorillawalker.com/economics-of-taxation-12th-edition-2012-13-economics-of-taxation.pdf
    • http://www.gorillawalker.com/writing-well-in-the-21st-century-the-five-essentials.pdf
    • http://www.gorillawalker.com/american-government-advanced-placement-eighth-edition.pdf
    • http://www.gorillawalker.com/giraph-in-action.pdf
    • http://www.gorillawalker.com/involving-senior-citizens-in-group-music-therapy.pdf
    • http://www.gorillawalker.com/takedown-inside-the-hunt-for-al-qaeda.pdf
    • http://www.gorillawalker.com/the-miami-vigilante-kindle-edition.pdf
    • http://www.gorillawalker.com/anna-and-friends-a-fmm-threesome-short-story.pdf
    • http://www.gorillawalker.com/nano-micro-science-and-technology-in-biorheology-principles-methods-and.pdf
    • http://www.gorillawalker.com/co2-laser-cutting.pdf
    • http://www.gorillawalker.com/welcome-to-initiation-into-the-church-for-byzantine-christians.pdf
    • http://www.gorillawalker.com/organometallic-syntheses-vol-4.pdf
    • http://www.gorillawalker.com/applied-game-theory-and-strategic-behavior.pdf
    • http://www.gorillawalker.com/the-boy-scouts-book-of-campfire-stories.pdf
    • http://www.gorillawalker.com/simple-sex-how-to-get-out-of-your-head-and.pdf
    • http://www.gorillawalker.com/cinderella-vocal-score.pdf
    • http://www.gorillawalker.com/the-history-of-panama-the-greenwood-histories-of-the-modern.pdf
    • http://www.gorillawalker.com/weasels-in-a-box-a-not-so-musical-journey-through.pdf
    • http://www.gorillawalker.com/amazon-prime-and-kindle-lending-library-all-the-benefits-of.pdf
    • http://www.gorillawalker.com/zanzibar-pemba-footprint-focus.pdf
    • http://www.gorillawalker.com/pie-100-gorgeously-glorious-recipes-100-great-recipes.pdf
    • http://www.gorillawalker.com/static-x-guitar-anthology.pdf
    • http://www.gorillawalker.com/the-italian-vetterli-system.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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