Malicious PDF — malware analysis report

Static analysis result for SHA-256 8763364c6f0cff71…

MALICIOUS

PDF

43.1 KB Created: 2018-11-14 08:46:00 +03:00 Authoring application: - (via Adobe Acrobat 10.0 Paper Capture Plug-in)
MD5: ebcfb5bff5647d54f47ab0ef873c4902 SHA-1: 541eae09d141e1880c5716aeb75db57960379b07 SHA-256: 8763364c6f0cff71ed367469a8208c5002eaa55b8f9c7e92ae812ced9245515e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to host malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact payload. However, the sheer volume of links suggests a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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/punch-or-the-london-charivari-volume-1-october-2-1841.pdf
    • http://www.gorillawalker.com/rise-of-the-guardians-story-of-jack-frost.pdf
    • http://www.gorillawalker.com/twilight-time.pdf
    • http://www.gorillawalker.com/proceedings-of-the-eighteenth-annual-conference-of-the-cognitive-science.pdf
    • http://www.gorillawalker.com/after-the-glitter-fades-wartime-poems-and-other-musings.pdf
    • http://www.gorillawalker.com/the-finger-of-god-sermons-on-faith-and-socio-political.pdf
    • http://www.gorillawalker.com/the-wind-at-work-an-activity-guide-to-windmills.pdf
    • http://www.gorillawalker.com/the-cambridge-companion-to-sam-shepard-cambridge-companions-to-literature.pdf
    • http://www.gorillawalker.com/the-relationship-between-depressive-symptomatology-and-high-blood-pressure-in.pdf
    • http://www.gorillawalker.com/historical-dictionary-of-japanese-foreign-policy-historical-dictionaries-of-diplomacy.pdf
    • http://www.gorillawalker.com/benedict-cumberbatch-reads-ian-kelly-s-casanova.pdf
    • http://www.gorillawalker.com/challenges-and-solutions-narratives-of-patient-centered-care.pdf
    • http://www.gorillawalker.com/the-insider-s-guide-to-real-estate-investing-loopholes.pdf
    • http://www.gorillawalker.com/the-adventures-of-augie-march.pdf
    • http://www.gorillawalker.com/fundamentals-of-periodontal-instrumentation-3rd-edition.pdf
    • http://www.gorillawalker.com/kleider-machen-leute-die-leserfreundliche-kultauflage-german-edition.pdf
    • http://www.gorillawalker.com/mentor-guiding-the-journey-of-adult-learners-with-new-foreword.pdf
    • http://www.gorillawalker.com/local-approach-to-fracture-an-introduction.pdf
    • http://www.gorillawalker.com/lisu-annual-library-statistics-2003-featuring-trend-analysis-of-uk.pdf
    • http://www.gorillawalker.com/the-hunted-tom-clancy-s-endwar-2.pdf
    • http://www.gorillawalker.com/the-3-how-to-gold-pan-book.pdf
    • http://www.gorillawalker.com/return-to-cooter-crossing-a-story-from-bennett-bay-stories.pdf
    • http://www.gorillawalker.com/cracking-the-ap-economics-micro-macro-2002-2003-edition-college.pdf
    • http://www.gorillawalker.com/honor-history-and-relationship-essays-in-second-personal-ethics-ii.pdf
    • http://www.gorillawalker.com/karen-pryor-on-behavior.pdf
    • http://www.gorillawalker.com/augustine-soliloquies-and-the-immortality-of-the-soul-classical-texts.pdf
    • http://www.gorillawalker.com/barriers-to-loving-a-clinician-s-perspective.pdf
    • http://www.gorillawalker.com/engines-energy-and-entropy-a-thermodynamics-primer.pdf
    • http://www.gorillawalker.com/turks-across-empires-marketing-muslim-identity-in-the-russian-ottoman.pdf
    • http://www.gorillawalker.com/five-star-basketball-my-favorite-moves-shooting-like-the-stars.pdf
    • http://www.gorillawalker.com/cruzar-la-l-nea-la-migraci-n-de-m-xico.pdf
    • http://www.gorillawalker.com/manga-moods-too-kindle-edition.pdf
    • http://www.gorillawalker.com/freshwater-fishes-of-canada.pdf
    • http://www.gorillawalker.com/groundhogs-see-soft-mkt-shadow-editorial-comment-insurance-forecasting-brief.pdf
    • http://www.gorillawalker.com/the-phantom-of-the-opera-puffin-classics.pdf
    • http://www.gorillawalker.com/dinosaurs-and-how-they-lived-see-explore-library.pdf
    • http://www.gorillawalker.com/do-it-yourself-bonefishing.pdf
    • http://www.gorillawalker.com/the-four-color-theorem-history-topological-foundations-and-idea-of.pdf
    • http://www.gorillawalker.com/surfed-to-death-kindle-edition.pdf
    • http://www.gorillawalker.com/troubled-romance.pdf
    • http://www.gorillawalker.com/the-cambridge-companion-to-sam-shepard-cambridge-compa
    • 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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