Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e70a28dccd56fd7…

MALICIOUS

PDF

43.3 KB Created: 2018-12-14 20:02:30 +03:00 Authoring application: PScript5.dll Version 5.2 (via Acrobat Distiller 8.0.0 (Windows))
MD5: e3ee112b108c5b649838143bde773673 SHA-1: 72edab755c1927727d152878d3ff5a14e0c9d725 SHA-256: 7e70a28dccd56fd7950d06a558ec30510a8d09b36431c1cfa7a64fa39ba5c48d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a malicious intent, possibly to manipulate search engine rankings or to serve as a distribution point for other malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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/scheherezade-op-35-sheet-music-piano-four-hands.pdf
    • http://www.gorillawalker.com/le-competenze-comunicative-in-oncologia-un-percorso-formativo-scienze-e.pdf
    • http://www.gorillawalker.com/battletech-major-periphery-states.pdf
    • http://www.gorillawalker.com/ho-chi-minh-city-saigon-travel-cost-guide-kindle-edition.pdf
    • http://www.gorillawalker.com/the-bicycling-guide-to-complete-bicycle-maintenance-and-repair-bicycling.pdf
    • http://www.gorillawalker.com/anne-of-green-gables-and-other-stories-12-novels-and.pdf
    • http://www.gorillawalker.com/train-your-brain.pdf
    • http://www.gorillawalker.com/government-zero-the-inside-story-of-the-progressive-islamic-takeover.pdf
    • http://www.gorillawalker.com/sentimentalism-an-entry-from-charles-scribner-s-sons-american-history.pdf
    • http://www.gorillawalker.com/florida-cowboys-keepers-of-the-last-frontier.pdf
    • http://www.gorillawalker.com/a-billionaire-ex-book-12-bbw-billionaire-romance.pdf
    • http://www.gorillawalker.com/the-paleo-kid-26-easy-recipes-that-will-transform-your.pdf
    • http://www.gorillawalker.com/racing-calendar.pdf
    • http://www.gorillawalker.com/longshot-and-risk.pdf
    • http://www.gorillawalker.com/justicia-ciega-spanish-edition.pdf
    • http://www.gorillawalker.com/official-wolverhampton-wanderers-fc-annual-2014.pdf
    • http://www.gorillawalker.com/albert-einstein-calendar-multilingual-edition.pdf
    • http://www.gorillawalker.com/sermons-184-229-works-of-saint-augustine.pdf
    • http://www.gorillawalker.com/lou-henry-hoover-the-duty-to-serve-notable-americans.pdf
    • http://www.gorillawalker.com/weird-one-acts-for-oddball-college-actors-a-collection-of.pdf
    • http://www.gorillawalker.com/small-animal-arthroscopy-1e.pdf
    • http://www.gorillawalker.com/word-power-phrasal-verbs-and-compounds-planet-communication.pdf
    • http://www.gorillawalker.com/sheriff-s-gay-debt-gay-bdsm-erotica-gay-sheriff-serial.pdf
    • http://www.gorillawalker.com/to-be-or-not-an-e-prime-anthology.pdf
    • http://www.gorillawalker.com/the-ship-in-the-medieval-economy-600-1600-american-council.pdf
    • http://www.gorillawalker.com/bang-iceland-how-to-sleep-with-icelandic-women-in-iceland.pdf
    • http://www.gorillawalker.com/history-of-the-sixth-new-hampshire-regiment-in-the-war.pdf
    • http://www.gorillawalker.com/books-helicopters-and-war-weapons-and-war-documentary-chinese-edition.pdf
    • http://www.gorillawalker.com/discovering-oceans-lakes-ponds-and-puddles-creation-up-close.pdf
    • http://www.gorillawalker.com/operation-and-modelling-of-the-metal-oxide-semiconductor-transistor.pdf
    • http://www.gorillawalker.com/the-mango-botany-production-and-uses-cabi.pdf
    • http://www.gorillawalker.com/speed-train-your-own-bird-dog-hunting-dogs-expert-teaches.pdf
    • http://www.gorillawalker.com/southern-california-native-flower-garden-the-a-guide-to-size.pdf
    • http://www.gorillawalker.com/keri-part-4-keri-karin-part-two-child-abuse-true.pdf
    • http://www.gorillawalker.com/2006-international-building-code-code-commentary-volume-1.pdf
    • http://www.gorillawalker.com/holt-mcdougal-world-regions-student-one-stop-set-of-25.pdf
    • http://www.gorillawalker.com/twentieth-century-telugu-poetry-an-anthology.pdf
    • http://www.gorillawalker.com/prentice-hall-molecular-model-set-for-organic-chemistry.pdf
    • http://www.gorillawalker.com/power-and-the-sacred-in-revolutionary-russia-religious-activists-in.pdf
    • http://www.gorillawalker.com/the-spinal-engine-paperback.pdf
    • http://www.gorillawalker.com/anne-of-green-gables-and-other
    • 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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