Malicious PDF — malware analysis report

Static analysis result for SHA-256 c873f9aa9ad0bb97…

MALICIOUS

PDF

44.0 KB Created: 2018-12-05 08:13:39 +03:00 Authoring application: Acrobat PDFMaker 7.0 for Publisher (via Acrobat Distiller 7.0 (Windows))
MD5: cd3c5b330b90e8cb286c750eecc1005c SHA-1: 940a2217939273bc4b3b1cb6a451425f644cb7d8 SHA-256: c873f9aa9ad0bb97138ce2082140d0088b992419e5ac8a7ffc1a523405329de7
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links pointing 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. No scripts were extracted from this sample, and the document body was not parsable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8224

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/desdemona-a-play-about-a-handkerchief.pdf
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    • http://www.gorillawalker.com/how-to-register-your-own-copyright-legal-survival-guides.pdf
    • http://www.gorillawalker.com/you-ve-got-a-hold-on-me.pdf
    • http://www.gorillawalker.com/what-s-in-your-locker-30-daily-devotions.pdf
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    • http://www.gorillawalker.com/better-homes-and-garden-new-cook-book-souvenir-edition.pdf
    • http://www.gorillawalker.com/mapsco-2010-san-antonio-street-guide-mapsco-street-guide-and.pdf
    • http://www.gorillawalker.com/blended-a-call-to-reimagine-our-church-family-rethinking-how.pdf
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    • http://www.gorillawalker.com/basics-of-social-research-qualitative-and-quantitative-approaches-3rd-edition.pdf
    • http://www.gorillawalker.com/stiff-a-murray-whelan-mystery.pdf
    • http://www.gorillawalker.com/action-research-improving-schools-and-empowering-educators.pdf
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    • http://www.gorillawalker.com/21st-century-complete-medical-guide-to-psoriasis-authoritative-government-documents.pdf
    • http://www.gorillawalker.com/barron-s-int-alg.pdf
    • http://www.gorillawalker.com/dream-of-the-archer.pdf
    • http://www.gorillawalker.com/manners-magic-paperback.pdf
    • http://www.gorillawalker.com/complete-guide-to-used-cars-1998-1998-edition-serial.pdf
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    • http://www.gorillawalker.com/the-elements-of-uml-tm-2-0-style.pdf
    • http://www.gorillawalker.com/coaching-football-successfully-coaching-successfully-series.pdf
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    • http://www.gorillawalker.com/the-complete-guide-to-oppe-strategies-for-medical-staff-professionals.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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