Malicious PDF — malware analysis report

Static analysis result for SHA-256 595c5f8ddf403b3a…

MALICIOUS

PDF

33.5 KB Created: 2019-07-13 04:20:17 +03:00 Authoring application: Pscript.dll Version 5.0 (via AFPL Ghostscript 8.50)
MD5: 109b2e9c85d8ec00f596901e82374499 SHA-1: 9c7ce86497c0069c3f4ed1fb68aa18d9ccdd9012 SHA-256: 595c5f8ddf403b3adcf0bfe12351accdaa70d841e8f33758c052542d8eea7640
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links suggests a malicious intent to drive traffic or potentially distribute further malware. The primary attack pattern observed is the creation of a link farm.

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-hours-and-the-typica.pdf
    • http://www.gorillawalker.com/geoff-the-green-hippo-a-children-s-book-about-adoption.pdf
    • http://www.gorillawalker.com/grace-sufficient.pdf
    • http://www.gorillawalker.com/vba-programming-for-microsoft-project-98-through-2010-with-an.pdf
    • http://www.gorillawalker.com/savannah-2015-2nd-edition-the-food-enthusiast-s-complete-restaurant.pdf
    • http://www.gorillawalker.com/como-viajar-con-bajo-presupuesto-ahorra-dinero-en-transporte-alojamiento.pdf
    • http://www.gorillawalker.com/cal-99-frogs.pdf
    • http://www.gorillawalker.com/statistical-physics-and-the-atomic-theory-of-matter-from-boyle.pdf
    • http://www.gorillawalker.com/mind-energy-lectures-and-essays-1920.pdf
    • http://www.gorillawalker.com/lander-sport-climbs.pdf
    • http://www.gorillawalker.com/janette-oke-s-reflections-on-the-christmas-story.pdf
    • http://www.gorillawalker.com/a-practical-guide-to-stroke.pdf
    • http://www.gorillawalker.com/economic-social-and-cultural-rights-in-international-law-contemporary-issues.pdf
    • http://www.gorillawalker.com/avizandum-statutes-on-scots-commercial-and-consumer-law-2010-2011.pdf
    • http://www.gorillawalker.com/cloud9-rooftop-architecture.pdf
    • http://www.gorillawalker.com/warman-s-pepsi-field-guide-values-and-identification-warman-s.pdf
    • http://www.gorillawalker.com/crash-et-crush-hqn-french-edition.pdf
    • http://www.gorillawalker.com/cuckolded-by-a-convict-an-erotic-novella.pdf
    • http://www.gorillawalker.com/f-plan-diet-the.pdf
    • http://www.gorillawalker.com/all-in-the-mind-a-farewell-to-god.pdf
    • http://www.gorillawalker.com/orphan-trains-the-story-of-charles-loring-brace-and-the.pdf
    • http://www.gorillawalker.com/acca-p1-governance-risk-and-ethics-audio-success-cds.pdf
    • http://www.gorillawalker.com/tempted-by-the-babysitter-totally-taboo-erotica-kindle-edition.pdf
    • http://www.gorillawalker.com/siliceous-deposits-of-the-tethys-and-pacific-regions.pdf
    • http://www.gorillawalker.com/the-gnostic-scriptures-history-theology-and-the-sacred-feminine-kindle.pdf
    • http://www.gorillawalker.com/the-killing-of-polly-carter.pdf
    • http://www.gorillawalker.com/upholding-the-paw-a-paw-enforcement-novel.pdf
    • http://www.gorillawalker.com/natural-treatment-for-hypothyroidism-hypothyroidism-that-your-doctor-never-tell.pdf
    • http://www.gorillawalker.com/oxford-service-music-for-organ-manuals-and-pedals-book-2.pdf
    • http://www.gorillawalker.com/big-data-para-directivos-spanish-edition.pdf
    • http://www.gorillawalker.com/what-shall-we-grow-a-critical-survey-of-the-literature.pdf
    • http://www.gorillawalker.com/dix-figures-a-danser-for-alto-saxophone-and-piano.pdf
    • http://www.gorillawalker.com/strategic-management-of-technological-innovation-print-replica-kindle-edition.pdf
    • http://www.gorillawalker.com/the-first-and-second-parts-of-king-edward-iv-by.pdf
    • http://www.gorillawalker.com/third-reich-fake-medals-and-badges-vol-1-army-war.pdf
    • http://www.gorillawalker.com/hand-reflexology.pdf
    • http://www.gorillawalker.com/grateful-dead-piano-vocal-chords.pdf
    • http://www.gorillawalker.com/proactive-risk-management-controlling-uncertainty-in-product-development.pdf
    • http://www.gorillawalker.com/foundations-of-complex-systems-emergence-information-and-prediction-2nd-edition.pdf
    • http://www.gorillawalker.com/the-distiller-s-guide-to-rum.pdf
    • http://www.gorillawalker.com/economic-social-and-cultural-rights-in-international-law-contemporary
    • 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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