Malicious PDF — malware analysis report

Static analysis result for SHA-256 61b509742e0bb1cb…

MALICIOUS

PDF

44.2 KB Created: 2018-12-15 20:07:43 +03:00 Authoring application: XPP (via Adobe Acrobat Pro DC 15.23.20053)
MD5: 1230caa68a81bf8d6baf6808eff41495 SHA-1: 5232bb0d7c6782bc283bf0cdf91b8988d7da7966 SHA-256: 61b509742e0bb1cbd9a3b552402797ad76da3f66e9841513c6a90736ab0a3df0
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file that contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to various PDF documents hosted on the same domain, suggesting a link farm or a method to distribute or obscure malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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-lord-of-the-rings-the-two-towers-official-2003.pdf
    • http://www.gorillawalker.com/land-of-giants-where-no-good-deed-goes-unpunished.pdf
    • http://www.gorillawalker.com/creation-in-six-days.pdf
    • http://www.gorillawalker.com/blue-corn-murders.pdf
    • http://www.gorillawalker.com/chattanooga-choo-choo-1941-vintage-sheet-music-mack-gordon-and.pdf
    • http://www.gorillawalker.com/the-phantom-of-the-opera-dover-thrift-editions.pdf
    • http://www.gorillawalker.com/politics-as-leadership-revised-edition-brick-lecture-series.pdf
    • http://www.gorillawalker.com/market-oriented-pricing-strategies-for-management.pdf
    • http://www.gorillawalker.com/crisis-response-humanitarian-band-aids-in-sudan-and-somalia.pdf
    • http://www.gorillawalker.com/a-church-shaped-for-mission.pdf
    • http://www.gorillawalker.com/a-first-course-in-wavelets-with-fourier-analysis.pdf
    • http://www.gorillawalker.com/the-boys-from-syracuse-lyrics-by-lorenz-hart-book-by.pdf
    • http://www.gorillawalker.com/cabo-one-and-two-family-dwelling-code-1995.pdf
    • http://www.gorillawalker.com/an-encyclopedia-of-fairies-hobgoblins-brownies-bogies-and-other-supernatural.pdf
    • http://www.gorillawalker.com/orthopedic-rehabilitation-clinical-advisor-1e.pdf
    • http://www.gorillawalker.com/environmental-management-readings-and-cases-2nd-edition.pdf
    • http://www.gorillawalker.com/egmont-french-edition.pdf
    • http://www.gorillawalker.com/the-sun-maid-a-story-of-fort-dearborn.pdf
    • http://www.gorillawalker.com/pushups-in-the-prayer-room-reflections-from-a-year-backpacking.pdf
    • http://www.gorillawalker.com/serenity-you-shall-love-serenity-barbour.pdf
    • http://www.gorillawalker.com/fair-italy-the-riviera-and-monte-carlo-comprising-a-tour.pdf
    • http://www.gorillawalker.com/jetfighter-iii-the-official-strategy-guide-secrets-of-the-games.pdf
    • http://www.gorillawalker.com/the-student-leadership-challenge-five-practices-for-becoming-an-exemplary.pdf
    • http://www.gorillawalker.com/homeric-megathemes-war-homilia-homecoming-greek-studies-interdisciplinary-approaches.pdf
    • http://www.gorillawalker.com/an-autumn-s-day.pdf
    • http://www.gorillawalker.com/multifunctional-oxide-heterostructures.pdf
    • http://www.gorillawalker.com/the-sword-of-allah-the-rise-of-islam-with-booklet.pdf
    • http://www.gorillawalker.com/a-grammar-of-the-christian-neo-aramaic-dialect-of-diyana.pdf
    • http://www.gorillawalker.com/vendetta-kindle-edition.pdf
    • http://www.gorillawalker.com/convection-heat-transfer.pdf
    • http://www.gorillawalker.com/hong-kong-who-s-who-an-almanac-of-personalities-and.pdf
    • http://www.gorillawalker.com/stories-seldom-told-biblical-stories-retold-for-children-and-adults.pdf
    • http://www.gorillawalker.com/unsayable-music-six-reflections-on-musical-semiotics-electroacoustic-and-digital.pdf
    • http://www.gorillawalker.com/mn-manganese-coordination-compounds-6-gmelin-handbook-of-inorganic-and.pdf
    • http://www.gorillawalker.com/green-smoothies-for-beginners-29-ways-to-add-green-smoothies.pdf
    • http://www.gorillawalker.com/uniforms-equipment-of-the-austro-hungarian-army-in-world-war.pdf
    • http://www.gorillawalker.com/think-and-grow-rich-network-marketing-edition-unabridged-audible-audio.pdf
    • http://www.gorillawalker.com/disney-princess-cd-storybook-4-in-1-disney-audio-cd.pdf
    • http://www.gorillawalker.com/airplane-evangelism-kindle-edition.pdf
    • http://www.gorillawalker.com/groundwater-contamination-risk-assessment-a-guide-to-understanding-and-managing.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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