Malicious PDF — malware analysis report

Static analysis result for SHA-256 70631085c28f128a…

MALICIOUS

PDF

38.9 KB Created: 2018-11-26 20:06:58 +03:00 Authoring application: Word (via Mac OS X 10.10.5 Quartz PDFContext)
MD5: 504322726554c9e59f22367d4b66ab1b SHA-1: 33bb96988f3792fb9e166f90f76f5089ba03b65c SHA-256: 70631085c28f128ad7958bb86affe95581f614ec2e3646100137d81f9a586ed6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files on the domain 'www.gorillawalker.com'. This behavior is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or drive traffic to malicious sites. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8500

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/a-dictionary-of-practical-materia-medica.pdf
    • http://www.gorillawalker.com/swedish-english-level-1-vocabulearn-original-format.pdf
    • http://www.gorillawalker.com/positively-outrageous-service-new-and-easy-ways-to-win-customers.pdf
    • http://www.gorillawalker.com/compression-of-biomedical-images-and-signals.pdf
    • http://www.gorillawalker.com/draining-development-controlling-flows-of-illicit-funds-from-developing-countries.pdf
    • http://www.gorillawalker.com/sat-vocabulary-audio-memorizer-500-sat-words-you-must-know.pdf
    • http://www.gorillawalker.com/meat-eaters-versus-vegetarians-exploring-the-issues-study-guide-issues.pdf
    • http://www.gorillawalker.com/europe-railways-euro-map.pdf
    • http://www.gorillawalker.com/face-to-face-a-closer-relationship.pdf
    • http://www.gorillawalker.com/the-return-of-jake-slater.pdf
    • http://www.gorillawalker.com/case-closed-v-6-manga.pdf
    • http://www.gorillawalker.com/reptiles-nature-company-discoveries-libraries.pdf
    • http://www.gorillawalker.com/precalculus-essentials-books-a-la-carte-edition-plus-new-mymathlab.pdf
    • http://www.gorillawalker.com/how-to-have-unexpected-income.pdf
    • http://www.gorillawalker.com/thelonious-monk-fake-book-e-flat-edition-artist-books.pdf
    • http://www.gorillawalker.com/wie-principles-of-highway-engineering-and-traffic-analysis-3e-international.pdf
    • http://www.gorillawalker.com/classical-black-nationalism-from-the-american-revolution-to-marcus-garvey.pdf
    • http://www.gorillawalker.com/color-photography-outdoors.pdf
    • http://www.gorillawalker.com/basic-business-chinese-english-and-chinese-edition.pdf
    • http://www.gorillawalker.com/the-russian-hill-murders-unabridged.pdf
    • http://www.gorillawalker.com/paychecks-and-playchecks-retirement-solutions-for-life-kindle-edition.pdf
    • http://www.gorillawalker.com/chinese-daoist-arts.pdf
    • http://www.gorillawalker.com/collins-and-lyne-s-microbiological-methods-7ed.pdf
    • http://www.gorillawalker.com/biology-for-a-changing-world.pdf
    • http://www.gorillawalker.com/50-nifty-funny-faces-to-draw.pdf
    • http://www.gorillawalker.com/victorian-school-manager.pdf
    • http://www.gorillawalker.com/struck.pdf
    • http://www.gorillawalker.com/hindu-temples-places-of-worship.pdf
    • http://www.gorillawalker.com/family-favorite-recipes-with-sun-maid-raisins-dried-fruit.pdf
    • http://www.gorillawalker.com/futa-future-sexsonian-2-futa-tentacle-horror-occult-the-sexsonian.pdf
    • http://www.gorillawalker.com/below-the-root.pdf
    • http://www.gorillawalker.com/the-forest-lover.pdf
    • http://www.gorillawalker.com/mathematics-higher-level-for-the-ib-diploma-option-topic-10.pdf
    • http://www.gorillawalker.com/blackmailed-for-sex-five-hardcore-rough-blackmail-sex-erotica-stories.pdf
    • http://www.gorillawalker.com/the-lean-startup-how-today-s-entrepreneurs-use-continuous-innovation.pdf
    • http://www.gorillawalker.com/murder-at-mansfield-park.pdf
    • http://www.gorillawalker.com/political-psychology-critical-perspectives.pdf
    • http://www.gorillawalker.com/the-choral-conductor-s-aural-tutor-g6905.pdf
    • http://www.gorillawalker.com/modern-israeli-tanks-and-infantry-carriers-1985-2004-new-vanguard.pdf
    • http://www.gorillawalker.com/an-operational-process-for-workforce-planning.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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