Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58a87123566b35a…

MALICIOUS

PDF

33.7 KB Created: 2019-05-24 00:42:08 +03:00 Authoring application: Word (via Acrobat PDFMaker 15 for Word)
MD5: 85b759c777423e493252c79b0d83ffb4 SHA-1: f9e34846e05d1fa72dedd7875cc05958746ab775 SHA-256: d58a87123566b35a390a036185b5b82b04db5cb6325297d24b200a37ee4e1d81
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to various PDF documents on the domain 'gorillawalker.com'. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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-complete-idiot-s-guide-to-gambling-like-a-pro.pdf
    • http://www.gorillawalker.com/the-cocktails-book-of.pdf
    • http://www.gorillawalker.com/acsm-nchpad-resources-for-the-inclusive-fitness-trainer.pdf
    • http://www.gorillawalker.com/from-topic-to-defense-writing-a-quality-social-science-dissertation.pdf
    • http://www.gorillawalker.com/information-arts-intersections-of-art-science-and-technology-leonardo-book.pdf
    • http://www.gorillawalker.com/electromagnetic-theory-pure-applied-physics.pdf
    • http://www.gorillawalker.com/comprehensive-handbook-of-drug-and-alcohol-addiction-2nd.pdf
    • http://www.gorillawalker.com/rollover-prevention-crash-avoidance-crashworthiness-ergonomics-and-humanfactors.pdf
    • http://www.gorillawalker.com/picture-bible-devotions.pdf
    • http://www.gorillawalker.com/massage-for-common-ailments-health.pdf
    • http://www.gorillawalker.com/chez-panisse-caf-cookbook.pdf
    • http://www.gorillawalker.com/for-the-cause-of-righteousness-a-global-history-of-blacks.pdf
    • http://www.gorillawalker.com/noble-intentions-season-one.pdf
    • http://www.gorillawalker.com/matrices-expanding-mathematics-series-book-3.pdf
    • http://www.gorillawalker.com/25-years-of-mountain-biking-specialized-stumpjumper-by-mark-riedy.pdf
    • http://www.gorillawalker.com/la-traviata-melodramma-in-three-acts-libretto-by-francesco-maria.pdf
    • http://www.gorillawalker.com/wp232-bastien-theory-and-technic-for-the-young-beginner-primer.pdf
    • http://www.gorillawalker.com/performance-analysis-and-optimization-of-inbound-call-centers-lecture-notes.pdf
    • http://www.gorillawalker.com/raja-ravi-varma-portrait-of-an-artist-the-diary-of.pdf
    • http://www.gorillawalker.com/basic-conversations-for-business-etiquette-reception-and-foreign-trade-with.pdf
    • http://www.gorillawalker.com/blood-on-the-church-house-steps.pdf
    • http://www.gorillawalker.com/texas-ransom-the-gunsmith-book-83.pdf
    • http://www.gorillawalker.com/reviews-of-the-dead-25-zombie-movies-to-die-for.pdf
    • http://www.gorillawalker.com/greek-hoplite-480-323-bc-warrior.pdf
    • http://www.gorillawalker.com/d-cada-ganada-evaluando-el-legado-del-kirchnerismo-spanish-edition.pdf
    • http://www.gorillawalker.com/marathon-training-15-weeks-beginners-training-program-for-running-a.pdf
    • http://www.gorillawalker.com/the-story-of-saiunkoku-vol-7.pdf
    • http://www.gorillawalker.com/bye-bye-baby-brother.pdf
    • http://www.gorillawalker.com/patient-self-determination-in-long-term-care-implementing-the-psda.pdf
    • http://www.gorillawalker.com/world-link-intro-student-book.pdf
    • http://www.gorillawalker.com/believer-s-baptism-sign-of-the-new-covenant-in-christ.pdf
    • http://www.gorillawalker.com/nanomedical-device-and-systems-design-challenges-possibilities-visions.pdf
    • http://www.gorillawalker.com/i-can-be-a-plumber-i-can-be-books.pdf
    • http://www.gorillawalker.com/national-political-convention-ribbon-badges-catalog-price-guide.pdf
    • http://www.gorillawalker.com/metal-ions-in-solution.pdf
    • http://www.gorillawalker.com/modeling-the-figure-in-clay-30th-anniversary-edition-a-sculptor.pdf
    • http://www.gorillawalker.com/two-character-plays-for-student-actors-a-collection-of-15.pdf
    • http://www.gorillawalker.com/hindu-polity-a-constitutional-history-of-india-in-hindu-times.pdf
    • http://www.gorillawalker.com/man-eating-tigers-of-chitwan.pdf
    • http://www.gorillawalker.com/una-guia-para-el-ministerio-expositivo-spanish-edition.pdf
    • http://www.gorill
    • 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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