Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ebe371d971a859…

MALICIOUS

PDF

40.1 KB Created: 2019-03-17 07:50:15 +03:00 Authoring application: FrameMaker 9.0 (via Acrobat Distiller 8.0.0 (Windows))
MD5: de32c73987b1893f402f2f151c29a36c SHA-1: 00ef05898d541e2a685a147311afef883603337a SHA-256: 70ebe371d971a85957ac0f24f0ad75e934beccb8d51a1f194aff35c586b97a22
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a heuristic indicating a large number of external links, suggesting a link farm or SEO manipulation tactic. While no scripts were extracted, the sheer volume of embedded URLs points towards an attempt to distribute or link to other content, potentially malicious. The attack pattern is inferred from the PDF_SEO_LINK_FARM heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/father-and-daughter-tuba-2-part-qty-7-a1591.pdf
    • http://www.gorillawalker.com/formwork-for-concrete.pdf
    • http://www.gorillawalker.com/english-gcse-passcards-keyfacts.pdf
    • http://www.gorillawalker.com/the-crisis-of-the-aristocracy-1558-1641-galaxy-books.pdf
    • http://www.gorillawalker.com/algebra-1-interactive-student-edition-cd-rom.pdf
    • http://www.gorillawalker.com/woodall-s-the-south-campground-guide-2010.pdf
    • http://www.gorillawalker.com/la-tiella-italian-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/in-god-s-hands-the-archbishop-of-canterbury-s-lent.pdf
    • http://www.gorillawalker.com/ruby-writes-a-story-max-and-ruby.pdf
    • http://www.gorillawalker.com/rub-n-dar-o-spanish-edition.pdf
    • http://www.gorillawalker.com/the-collected-works-of-bram-stoker-32-novels-and-short.pdf
    • http://www.gorillawalker.com/little-book-of-tattoos.pdf
    • http://www.gorillawalker.com/symphonie-fantastique-op-14-eulenburg-audio-score-series.pdf
    • http://www.gorillawalker.com/green-arrow-black-canary-family-business.pdf
    • http://www.gorillawalker.com/tarascon-pediatric-emergency-pocketbook-5th-edition.pdf
    • http://www.gorillawalker.com/the-new-business-road-test-what-entrepreneurs-and-executives-should.pdf
    • http://www.gorillawalker.com/2015-imagine-wall-calendar.pdf
    • http://www.gorillawalker.com/don-katz-on-just-do-it-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/strategic-issues-in-european-aerospace-industry.pdf
    • http://www.gorillawalker.com/control-system-design-an-introduction-to-state-space-methods-dover.pdf
    • http://www.gorillawalker.com/the-triumph-of-grace-in-deuteronomy-paternoster-biblical-monographs-paternoster.pdf
    • http://www.gorillawalker.com/framed-spaces-photography-and-memory-in-contemporary-installation-art-interfaces.pdf
    • http://www.gorillawalker.com/modern-japanese-poetry-asian-and-pacific-writing-9.pdf
    • http://www.gorillawalker.com/handbook-of-discrete-valued-time-series-chapman-hall-crc-handbooks.pdf
    • http://www.gorillawalker.com/gu-a-de-clase-de-sistemas-inform-ticos-monousuario-y.pdf
    • http://www.gorillawalker.com/colonies.pdf
    • http://www.gorillawalker.com/cracks-in-my-foundation-bags-trips-make-up-tips-charity.pdf
    • http://www.gorillawalker.com/audio-amplifier-construction-bernard-babani-publishing-radio-electronics-books.pdf
    • http://www.gorillawalker.com/wiser-getting-beyond-groupthink-to-make-groups-smarter.pdf
    • http://www.gorillawalker.com/advanced-email-marketing.pdf
    • http://www.gorillawalker.com/caring-for-adults-with-mental-health-problems-wiley-series-in.pdf
    • http://www.gorillawalker.com/geology-of-the-naivasha-area-explanation-of-degree-sheet-43.pdf
    • http://www.gorillawalker.com/comprehensive-cytopathology-expert-consult-online-and-print-3e.pdf
    • http://www.gorillawalker.com/plunkett-s-airline-hotel-travel-industry-almanac-2005-the-only.pdf
    • http://www.gorillawalker.com/centerstream-publishing-electric-guitar-construction-book.pdf
    • http://www.gorillawalker.com/hana-s-suitcase.pdf
    • http://www.gorillawalker.com/unforgive-my-heart-nothing-is-what-it-seems.pdf
    • http://www.gorillawalker.com/aviation-mechanic-handbook.pdf
    • http://www.gorillawalker.com/shake-it-up-baby.pdf
    • http://www.gorillawalker.com/joel-and-the-day-of-the-lord-kindle-edition.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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