Malicious PDF — malware analysis report

Static analysis result for SHA-256 3afc03a8fcbdb7af…

MALICIOUS

PDF

43.2 KB Created: 2019-03-17 04:27:23 +03:00 Authoring application: PDFCreator Version 0.9.8 (via GPL Ghostscript 8.64)
MD5: 5e3f51904dba301fffea069f9591af9a SHA-1: 2edc8596ab393ad0f4b0826cc9f5a0d674293288 SHA-256: 3afc03a8fcbdb7afa0b57f8054297805b42037c5ac603ce0a5b591743be4d468
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body is heavily obfuscated and unreadable, providing no direct clues about its intent beyond the link farm. No scripts were extracted from this sample.

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/aids-to-the-examination-of-the-peripheral-nervous-system-5e.pdf
    • http://www.gorillawalker.com/board-betrayal-the-weirton-steel-story-failed-governance-and-management.pdf
    • http://www.gorillawalker.com/theory-of-function-spaces-modern-birkh-user-classics.pdf
    • http://www.gorillawalker.com/organic-reactions-volume-49.pdf
    • http://www.gorillawalker.com/pocket-posh-sudoku-8-100-puzzles.pdf
    • http://www.gorillawalker.com/making-things.pdf
    • http://www.gorillawalker.com/d-b-country-report-senegal-download-pdf-digital.pdf
    • http://www.gorillawalker.com/beginning-with-johns-gospel.pdf
    • http://www.gorillawalker.com/swallowed-by-satan.pdf
    • http://www.gorillawalker.com/chemical-embryology-complete-in-three-volumes-vol-ii-vol-2.pdf
    • http://www.gorillawalker.com/the-magic-of-the-ballet-gift-set.pdf
    • http://www.gorillawalker.com/a-guide-to-the-silhouette-cameo-2nd-edition-version-3.pdf
    • http://www.gorillawalker.com/methodologies-in-housing-research.pdf
    • http://www.gorillawalker.com/righting-an-injustice-the-debate-over-redress-for-canada-s.pdf
    • http://www.gorillawalker.com/the-funk-wag-from-a-to-z-menil-collection.pdf
    • http://www.gorillawalker.com/comparative-welfare-state-politics-development-opportunities-and-reform.pdf
    • http://www.gorillawalker.com/sonata-in-c-k-545-complete-alfred-masterwork-edition.pdf
    • http://www.gorillawalker.com/trespassing-on-einstein-s-lawn-a-father-a-daughter-the.pdf
    • http://www.gorillawalker.com/yankees-and-rebels-the-civil-war-kindle-edition.pdf
    • http://www.gorillawalker.com/steps-to-independent-living-how-to-use-money-wisely.pdf
    • http://www.gorillawalker.com/clinical-gastroenterology-and-hepatology-january-2009-7.pdf
    • http://www.gorillawalker.com/human-trafficking-prices-and-statistics-of-the-modern-day-slave.pdf
    • http://www.gorillawalker.com/dk-readers-antarctic-adventure-exploring-the-frozen-continent-level-4.pdf
    • http://www.gorillawalker.com/cookin-crunk-eating-vegan-in-the-dirty-south.pdf
    • http://www.gorillawalker.com/letters-from-the-field-1925-1975.pdf
    • http://www.gorillawalker.com/vindicated-fall-of-angels.pdf
    • http://www.gorillawalker.com/get-a-great-job-when-you-don-t-have-a.pdf
    • http://www.gorillawalker.com/strawberries-for-dessert-coda-books-4.pdf
    • http://www.gorillawalker.com/official-wnba-guide-and-register-2002-edition.pdf
    • http://www.gorillawalker.com/kaplan-gmat-math-workbook-kaplan-test-prep.pdf
    • http://www.gorillawalker.com/the-u-s-naval-institute-on-naval-command-the-u.pdf
    • http://www.gorillawalker.com/fragile-heritage-a-rock-art-field-guide.pdf
    • http://www.gorillawalker.com/art-at-the-rockface-the-fascination-of-stone-hardback-common.pdf
    • http://www.gorillawalker.com/guide-to-passing-the-psi-real-estate-exam-6th-edition.pdf
    • http://www.gorillawalker.com/modelling-dynamics-in-processes-and-systems-studies-in-computational-intelligence.pdf
    • http://www.gorillawalker.com/the-china-road-the-outsourcing-option-isn-t-as-cheap.pdf
    • http://www.gorillawalker.com/the-science-of-ahcc-japan-s-medical-breakthrough-in-immunotherapy.pdf
    • http://www.gorillawalker.com/artist-author-contemporary-artists-books.pdf
    • http://www.gorillawalker.com/studio-ghibli-trumpet-solo-sheet-music-score-book-withcd-totoro.pdf
    • http://www.gorillawalker.com/one-night-with-the-prince.pdf
    • http://www.gorillawalker.com/theory-of-
    • 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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