Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e474fe4d9d7b9c…

MALICIOUS

PDF

41.2 KB Created: 2018-12-11 20:29:34 +03:00 Authoring application: - (via Mac OS X 10.6.8 Quartz PDFContext)
MD5: 59dda9cde7ff3c1a33e7c7767269bf80 SHA-1: 67c3c5de86f26ddc8987db12b0a1c82b396bb922 SHA-256: c9e474fe4d9d7b9cd3e336588f3c926eabc070488161fb8e41f4de709bea492b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and contains a large number of embedded URLs, indicating a potential link farm or distribution mechanism. The heuristic 'PDF_SEO_LINK_FARM' specifically calls out the mass external PDF link farm. While no scripts were extracted, the sheer volume of links suggests an attempt to lure users to external resources, possibly for further exploitation or to manipulate search engine rankings.

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/mothers-of-misery-child-abandonment-in-russia-princeton-legacy-library.pdf
    • http://www.gorillawalker.com/yoga-pilates-for-everyone.pdf
    • http://www.gorillawalker.com/minecraft-gameplay-trivia-quiz-book.pdf
    • http://www.gorillawalker.com/the-defiance-brilliant-darkness.pdf
    • http://www.gorillawalker.com/the-logic-of-medicine.pdf
    • http://www.gorillawalker.com/a-complete-treatise-on-practical-land-surveying-in-seven-parts.pdf
    • http://www.gorillawalker.com/the-postcard-age-selections-from-the-leonard-a-lauder-collection.pdf
    • http://www.gorillawalker.com/drawing-portraits-faces-and-figures-art-of-drawing-paperback-2002.pdf
    • http://www.gorillawalker.com/the-burren-a-two-inch-map-of-the-uplands-of.pdf
    • http://www.gorillawalker.com/property-law-cases-materials-and-questions-2nd-edition-teacher-s.pdf
    • http://www.gorillawalker.com/gerontological-nursing-8-pap-psc-edition-by-eliopoulos-rn-mph.pdf
    • http://www.gorillawalker.com/the-philanthropist-s-daughter-private-dick-on-the-case-series.pdf
    • http://www.gorillawalker.com/english-boundless-extreme-sports-2nd-series-english-chinese.pdf
    • http://www.gorillawalker.com/a-blue-dog-christmas.pdf
    • http://www.gorillawalker.com/the-possessed-fyodor-dostoevsky-easton-press-fritz-eichenberg-illustrations.pdf
    • http://www.gorillawalker.com/zagat-top-u-s-hotels-resorts-spas-zagat-survey-top.pdf
    • http://www.gorillawalker.com/legal-thriller-chase-the-bad-baby-a-novel-legal-thriller.pdf
    • http://www.gorillawalker.com/ancillary-justice-imperial-radch.pdf
    • http://www.gorillawalker.com/bouquets-from-the-cannon-s-mouth-soldiering-with-the-eighth.pdf
    • http://www.gorillawalker.com/the-dying-earth-rpg.pdf
    • http://www.gorillawalker.com/the-wickedest-lord-alive-westruthers.pdf
    • http://www.gorillawalker.com/the-yoga-sutra-of-pata-jali-a-new-translation-and.pdf
    • http://www.gorillawalker.com/busting-free-helping-youth-discover-their-true-identity-in-christ.pdf
    • http://www.gorillawalker.com/dennis-oppenheim-explorations.pdf
    • http://www.gorillawalker.com/envisioning-the-tale-of-genji-media-gender-and-cultural-production.pdf
    • http://www.gorillawalker.com/provence-2004-mini-calendar.pdf
    • http://www.gorillawalker.com/slovenia-1-250-000-with-cultural-guide-german-edition.pdf
    • http://www.gorillawalker.com/waterdeep-avatar-series-book-iii-the-avatar-series-3.pdf
    • http://www.gorillawalker.com/fodor-s-italy-2016-full-color-travel-guide.pdf
    • http://www.gorillawalker.com/lauras-unschuld-xxl12-wirtschaftsthriller-xxl-leseprobe-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/signals-systems-and-transforms.pdf
    • http://www.gorillawalker.com/harris-northern-california-business-directory-and-buyer-s-guide-2015.pdf
    • http://www.gorillawalker.com/alex-et-zo-et-compagnie-no-2.pdf
    • http://www.gorillawalker.com/effective-keys-to-successful-leadership.pdf
    • http://www.gorillawalker.com/capital-investment-for-health-case-studies-from-europe-observatory-studies.pdf
    • http://www.gorillawalker.com/circle-in-the-sand-why-we-went-back-to-iraq.pdf
    • http://www.gorillawalker.com/the-psychology-of-driving.pdf
    • http://www.gorillawalker.com/jane-goodall-50-years-at-gombe.pdf
    • http://www.gorillawalker.com/lingo-of-no-man-s-land-a-world-war-i.pdf
    • http://www.gorillawalker.com/the-most-special-day-of-my-life.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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