Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff705725d2d545c3…

MALICIOUS

PDF

42.6 KB Created: 2019-03-17 12:32:36 +03:00 Authoring application: Pages (via Mac OS X 10.11.6 Quartz PDFContext)
MD5: b38a21c37d3e06e0621ca9ec450c1a4b SHA-1: d1e2a070330178e9169fba8672782b4a59a263c1 SHA-256: ff705725d2d545c30e57ff30280c35190fd2a64888c218d35f493f792dc0b296
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine results or to distribute further malicious content disguised as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/the-mediator-s-handbook-second-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/russian-edition.pdf
    • http://www.gorillawalker.com/digitales-zeichnen-digital-drawing-german-edition.pdf
    • http://www.gorillawalker.com/60-minute-training-series-set-how-to-encourage-constructive-feedback.pdf
    • http://www.gorillawalker.com/nightingales-pleasure-gardens-turkish-love-poems-middle-east-literature-in.pdf
    • http://www.gorillawalker.com/abu-dhabi-oil-and-beyond-by-christopher-m-davidson-2011.pdf
    • http://www.gorillawalker.com/messiah-hwv-56-part-i-air-he-shall-feed-his.pdf
    • http://www.gorillawalker.com/command-control-and-the-common-defense.pdf
    • http://www.gorillawalker.com/sex-pictures-of-naked-girls-on-the-beach-kindle-edition.pdf
    • http://www.gorillawalker.com/essentials-of-nuclear-chemistry.pdf
    • http://www.gorillawalker.com/probability-stochastic-processes-and-queueing-theory-the-mathematics-of-computer.pdf
    • http://www.gorillawalker.com/micromanufacturing-engineering-and-technology-micro-and-nano-technologies.pdf
    • http://www.gorillawalker.com/a-prehistory-of-the-cloud.pdf
    • http://www.gorillawalker.com/grolier-student-library-of-explorers-and-exploration.pdf
    • http://www.gorillawalker.com/multi-agent-programming.pdf
    • http://www.gorillawalker.com/diabolically-detailed-coloring-book-volume-1-art-filled-fun-coloring.pdf
    • http://www.gorillawalker.com/use-of-vegetation-as-an-indicator-for-soil-properties-under.pdf
    • http://www.gorillawalker.com/the-chinnese.pdf
    • http://www.gorillawalker.com/decimals-a-place-value-approach.pdf
    • http://www.gorillawalker.com/san-marino-italian-town-plans.pdf
    • http://www.gorillawalker.com/game-user-experience-evaluation-human-computer-interaction-series.pdf
    • http://www.gorillawalker.com/good-practice-details.pdf
    • http://www.gorillawalker.com/the-kremlin-phoenix.pdf
    • http://www.gorillawalker.com/foundations-in-microbiology-seventh-edition.pdf
    • http://www.gorillawalker.com/bonny-brains-children-chapter-book-in-twenty-three-verse-kindle.pdf
    • http://www.gorillawalker.com/colloquial-greek-colloquial-series.pdf
    • http://www.gorillawalker.com/tv-go-home.pdf
    • http://www.gorillawalker.com/creating-sacred-space-with-feng-shui-learn-the-art-of.pdf
    • http://www.gorillawalker.com/diario-erotico-di-un-ragazzo-italian-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/bundle-soapmaking-collection-the-ultimate-guide-to-soapmaking-25-recipes.pdf
    • http://www.gorillawalker.com/doody-s-health-sciences-book-review-annual-1993.pdf
    • http://www.gorillawalker.com/il-politico-storie-racconti-italian-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/biotech-pharma-medical-devices-2015-directory-of-search-firms-and.pdf
    • http://www.gorillawalker.com/interventi-locali-su-edifici-in-muratura-guida-pratica-alla-realizzazione.pdf
    • http://www.gorillawalker.com/measuring-landscapes-a-planner-s-handbook.pdf
    • http://www.gorillawalker.com/evangelical-theological-perspectives-on-post-vatican-ii-roman-catholicism-religions.pdf
    • http://www.gorillawalker.com/art-making-collections-and-obsessions.pdf
    • http://www.gorillawalker.com/of-courage-and-determination-the-first-special-service-force-the.pdf
    • http://www.gorillawalker.com/corn-rat-snakes-complete-herp-care.pdf
    • http://www.gorillawalker.com/purpose-driven-youth-ministry.pdf
    • http://www.gorillawalker.com/messiah-hwv-
    • 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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