Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa56a8ed8241744f…

MALICIOUS

PDF

44.5 KB Created: 2018-12-07 18:29:59 +03:00 Authoring application: - (via Python PDF Library - http://pybrary.net/pyPdf/)
MD5: 3ad9004f5c4dc49c5bdf6a8028fa9211 SHA-1: 181857bd47ba212dc2901d7824bd93574491af5f SHA-256: aa56a8ed8241744f0c55db749302fbb6b0640d795ce4f943fb38ca965aee1c62
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents on the domain 'gorillawalker.com'. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8224

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/sustainable-innovation-build-your-company-146-s-capacity-to-change.pdf
    • http://www.gorillawalker.com/jugendalbum.pdf
    • http://www.gorillawalker.com/facility-location-applications-and-theory.pdf
    • http://www.gorillawalker.com/rigoletto-vocal-score-dover-vocal-scores.pdf
    • http://www.gorillawalker.com/paleo-7-day-paleo-diet-meal-plan-paleo-paleo-diet.pdf
    • http://www.gorillawalker.com/hvac-systems-design-handbook.pdf
    • http://www.gorillawalker.com/applescripting-adobe-indesign-cs5-and-cs5-5.pdf
    • http://www.gorillawalker.com/ready-for-printing-kids-can-learn-with-franklin.pdf
    • http://www.gorillawalker.com/the-chase.pdf
    • http://www.gorillawalker.com/spin-wave-technology-initial-release.pdf
    • http://www.gorillawalker.com/diccionario-de-especialidades-farmaceuticas.pdf
    • http://www.gorillawalker.com/the-living-room-mysteries-patterns-of-male-intimacy-book-2.pdf
    • http://www.gorillawalker.com/the-lean-indian-cookbook-delicious-healthy-low-fat-fast-easy.pdf
    • http://www.gorillawalker.com/looseleaf-for-statistical-techniques-in-business-and-economics.pdf
    • http://www.gorillawalker.com/creation-stories-riots-raves-and-running-a-label.pdf
    • http://www.gorillawalker.com/dinky-dino-wobbly-eyes.pdf
    • http://www.gorillawalker.com/deleuze-s-hume-philosophy-culture-and-the-scottish-enlightenment.pdf
    • http://www.gorillawalker.com/light-page-turners-8-page-turners-reading-library-level-8.pdf
    • http://www.gorillawalker.com/cmos-vlsi-design-3th-third-edition-text-only.pdf
    • http://www.gorillawalker.com/if-you-give-a-kid-a-cookie-will-he-shut.pdf
    • http://www.gorillawalker.com/rules-for-descriptive-cataloging-in-the-library-of-congress-motion.pdf
    • http://www.gorillawalker.com/madhur-jaffrey-s-cookbook.pdf
    • http://www.gorillawalker.com/finding-new-neighbors-clearing-the-way-to-clear-to-close.pdf
    • http://www.gorillawalker.com/healing-with-energy.pdf
    • http://www.gorillawalker.com/vignettes-of-indian-english-literature.pdf
    • http://www.gorillawalker.com/handbook-to-the-rogue-river-canyon-paperback.pdf
    • http://www.gorillawalker.com/archaeological-investigations-at-molpa-san-diego-county-california-university-of.pdf
    • http://www.gorillawalker.com/juggling-super-activ.pdf
    • http://www.gorillawalker.com/from-oz-to-kansas-almost-every-black-and-white-conversion.pdf
    • http://www.gorillawalker.com/hidden-alpha-alpha-mates-siren-publishing-menage-amour.pdf
    • http://www.gorillawalker.com/aircraft-design-rds-student-a-conceptual-approach-aiaa-education-series.pdf
    • http://www.gorillawalker.com/the-tip-of-eternity-kindle-edition.pdf
    • http://www.gorillawalker.com/the-eerdmans-bible-dictionary.pdf
    • http://www.gorillawalker.com/so-you-think-you-are-ready-to-retire-us-version.pdf
    • http://www.gorillawalker.com/ebay-2014-why-you-re-not-selling-anything-on-ebay.pdf
    • http://www.gorillawalker.com/coaching-youth-volleyball-online-course-pdf.pdf
    • http://www.gorillawalker.com/institutions-of-american-democracy-the-legislative-branch.pdf
    • http://www.gorillawalker.com/models-of-mesopotamian-landscapes-how-small-scale-processes-contributed-to.pdf
    • http://www.gorillawalker.com/quebec-women-and-legislative-representation.pdf
    • http://www.gorillawalker.com/jacky-newcomb-s-little-angels-40-inspirational-cards.pdf
    • http://pybrary.net/pyPdf/
    • http://www.gorillawalker.com/applescript
    • 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#
    +1 more URL(s)

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