Malicious PDF — malware analysis report

Static analysis result for SHA-256 441a96ad279f2ec0…

MALICIOUS

PDF

43.1 KB Created: 2019-04-06 14:57:57 +03:00 Authoring application: Acrobat PDFMaker 10.1 for Word (via Adobe PDF Library 10.0)
MD5: 4573908d6f546b7ddadbbce2b9a7bc2a SHA-1: 2b63ca691f598c212554142be7994cf71141931a SHA-256: 441a96ad279f2ec0b2c1b6f03988662db768488aa831f7673c682cdc7a93b438
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded links to external PDF files hosted on gorillawalker.com. This technique is often used for SEO manipulation or to redirect users to malicious websites. 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 0.9027

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/confessions-of-a-serial-dieter.pdf
    • http://www.gorillawalker.com/moko-maori-tattoos.pdf
    • http://www.gorillawalker.com/fortress-ussr-the-soviet-strategic-defense-initiative-and-the-u.pdf
    • http://www.gorillawalker.com/organ-concerto-no-ii-in-a-minor-bwv-593-for.pdf
    • http://www.gorillawalker.com/the-arrl-rfi-handbook-practical-cures-for-radio-frequency-interference.pdf
    • http://www.gorillawalker.com/alexander-s-buses-remembered-1945-1961-v-1.pdf
    • http://www.gorillawalker.com/the-classroom-and-the-cell-conversations-on-black-life-in.pdf
    • http://www.gorillawalker.com/taken-by-the-vikings-gay-erotica.pdf
    • http://www.gorillawalker.com/none-so-blind-a-short-story-collection.pdf
    • http://www.gorillawalker.com/on-combat-the-psychology-and-physiology-of-deadly-conflict-in.pdf
    • http://www.gorillawalker.com/pulse-electric-current-synthesis-and-processing-of-materials-ceramic-transactions.pdf
    • http://www.gorillawalker.com/the-crimea-with-a-visit-to-odessa.pdf
    • http://www.gorillawalker.com/clinical-physiology-of-sleep-clinical-physiology-series.pdf
    • http://www.gorillawalker.com/new-tastes-of-india-over-100-vibrant-vegetarian-recipes-from.pdf
    • http://www.gorillawalker.com/animal-dentistry-and-diseases-of-the-mouth-veterinary-surgery-volume.pdf
    • http://www.gorillawalker.com/the-killer-s-tears.pdf
    • http://www.gorillawalker.com/computadoras-para-todos-3a-edici-n-edici-n-ampliada-con.pdf
    • http://www.gorillawalker.com/dying-with-robert-mitchum.pdf
    • http://www.gorillawalker.com/demon-night.pdf
    • http://www.gorillawalker.com/egypt-yesterday-and-today.pdf
    • http://www.gorillawalker.com/vascular-surgery-2-volume-set.pdf
    • http://www.gorillawalker.com/the-jacobites-and-their-drinking-glasses.pdf
    • http://www.gorillawalker.com/the-dance-music-of-ireland-1001-gems.pdf
    • http://www.gorillawalker.com/coaching-soccer-tactics.pdf
    • http://www.gorillawalker.com/the-question-of-being.pdf
    • http://www.gorillawalker.com/no-slouch.pdf
    • http://www.gorillawalker.com/genetics-and-epithelial-cell-dysfunction-in-cystic-fibrosis-proceedings-of.pdf
    • http://www.gorillawalker.com/digital-logic-circuit-design-korean-edition.pdf
    • http://www.gorillawalker.com/the-peacemakers.pdf
    • http://www.gorillawalker.com/master-class-living-longer-stronger-and-happier-kindle-edition.pdf
    • http://www.gorillawalker.com/by-fred-unterseher-bob-schlesinger-jeanne-hansen-holography-handbook-making.pdf
    • http://www.gorillawalker.com/bildgebende-verfahren-in-der-medizin-von-der-technik-zur-medizinischen.pdf
    • http://www.gorillawalker.com/methodological-thinking-in-psychology-60-years-gone-astray-pb-advances.pdf
    • http://www.gorillawalker.com/against-infinity.pdf
    • http://www.gorillawalker.com/skits-that-teach-lactose-free-for-those-who-can-t.pdf
    • http://www.gorillawalker.com/weebles-weebles-on-parade-coloring-book-with-thick-crayons.pdf
    • http://www.gorillawalker.com/breaking-point-chapter-4-kindle-edition.pdf
    • http://www.gorillawalker.com/little-songs-of-the-geisha.pdf
    • http://www.gorillawalker.com/sexy-cowgirls-a-picture-book-kindle-edition.pdf
    • http://www.gorillawalker.com/learn-to-program-with-java-applet-game-examples-b-w.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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