Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea27dd05426d3ab…

MALICIOUS

PDF

39.2 KB Created: 2019-04-04 14:32:54 +03:00 Authoring application: PScript5.dll Version 5.2 (via Acrobat Distiller 5.0 (Windows))
MD5: fd393fae3644a4ff3a5dd41202884462 SHA-1: bcb2b3e6943b5e7917c444f71480aa2a55b6d8ec SHA-256: eea27dd05426d3abd2cb1100be78271d9773f0852da63014a34217e6a2e296a3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine the exact user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8901

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/zhong-wai-wei-xing-xiao-shuo-jian-shang-ci-dian.pdf
    • http://www.gorillawalker.com/sesame-beginnings-firsts-sesame-street.pdf
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    • http://www.gorillawalker.com/creating-affluence-the-a-to-z-steps-to-a-richer.pdf
    • http://www.gorillawalker.com/5-minutes-with-christ-spiritual-nourishment-for-busy-teachers.pdf
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    • http://www.gorillawalker.com/esquisses-senegalaises-french-edition.pdf
    • http://www.gorillawalker.com/the-eton-roundels-eton-college-ms-177-figurae-bibliorum-a.pdf
    • http://www.gorillawalker.com/psychoanalytic-perspectives-on-women.pdf
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    • http://www.gorillawalker.com/twelve-step-christianity-the-christian-roots-application-of-the-twelve.pdf
    • http://www.gorillawalker.com/gender-and-emotion-social-psychological-perspectives-studies-in-emotion-and.pdf
    • http://www.gorillawalker.com/vehicle-restoration-log-silver-cover-s-m-car-journals.pdf
    • http://www.gorillawalker.com/invest-like-a-dealmaker-secrets-from-a-former-banking-insider.pdf
    • http://www.gorillawalker.com/mummies-tombs-and-treasure-secrets-of-ancient-egypt-vol-1.pdf
    • http://www.gorillawalker.com/houston-unleashed.pdf
    • http://www.gorillawalker.com/martin-de-porres-a-saint-for-our-time.pdf
    • http://www.gorillawalker.com/book-selection-and-censorship-a-study-of-school-and-public.pdf
    • http://www.gorillawalker.com/san-juan-adventure-guide-hiking-biking-and-skiing-in-southwestern.pdf
    • http://www.gorillawalker.com/cardiothoracic-surgery-vademecum.pdf
    • http://www.gorillawalker.com/real-science-4-kids-biology-level-1-laboratory-worksheets.pdf
    • http://www.gorillawalker.com/les-femmes-d-amis-french-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/investigations-on-the-theory-of-the-brownian-movement.pdf
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    • http://www.gorillawalker.com/liability-insurance-lloyd-s-insurance-law-library.pdf
    • http://www.gorillawalker.com/explorer-s-guide-maine-sixteenth-edition-explorer-s-complete.pdf
    • http://www.gorillawalker.com/piano-concerto-no-1-theme-from-the-op-23-accordion.pdf
    • http://www.gorillawalker.com/introduction-to-nuclear-radiation-detectors-laboratory-instrumentation-and-techniques.pdf
    • http://www.gorillawalker.com/progress-in-thin-layer-chromatography-and-related-methods-v-2.pdf
    • http://www.gorillawalker.com/olympus-at-w
    • 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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