Malicious PDF — malware analysis report

Static analysis result for SHA-256 870ce03d88128eab…

MALICIOUS

PDF

42.1 KB Created: 2018-11-23 08:00:49 +03:00 Authoring application: Microsoft® Word 2010 (via Acrobat Distiller 11.0 (Windows))
MD5: 8174bced29569cc38b7bae77d88a999c SHA-1: 077ec7f1df6bb82e02158e2828ef0b6b8393740b SHA-256: 870ce03d88128eab51e4aab0e4bfcca01e88989dab5a14ef1cffb162b27d38e2
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this document as malicious. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a malicious intent, possibly for SEO manipulation or to distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/ellen-von-unwerth-couples.pdf
    • http://www.gorillawalker.com/recovering-from-child-abuse-healing-and-hope-for-victims.pdf
    • http://www.gorillawalker.com/21st-century-warfare-prayers-effective-spiritual-warfare-in-the-21st.pdf
    • http://www.gorillawalker.com/the-great-dali-art-fraud-and-other-deceptions.pdf
    • http://www.gorillawalker.com/aspects-of-hobbes.pdf
    • http://www.gorillawalker.com/the-three-donalds-a-tartan-fantasy.pdf
    • http://www.gorillawalker.com/rudimental-snare-drum-grooves.pdf
    • http://www.gorillawalker.com/real-world-adobe-indesign-cc-kindle-edition.pdf
    • http://www.gorillawalker.com/grandma-gatewood-s-walk-the-inspiring-story-of-the-woman.pdf
    • http://www.gorillawalker.com/pocket-full-of-posies-bible-cover.pdf
    • http://www.gorillawalker.com/consulting-101-101-tips-for-success-in-consulting-paperback-2010.pdf
    • http://www.gorillawalker.com/the-awakening-of-the-dreamer.pdf
    • http://www.gorillawalker.com/rock-s-bitch-kindle-edition.pdf
    • http://www.gorillawalker.com/the-napoleonic-empire-second-edition-studies-in-european-history.pdf
    • http://www.gorillawalker.com/stranded-with-a-billionaire-billionaire-boys-club-book-1-unabridged.pdf
    • http://www.gorillawalker.com/top-20-things-to-see-and-do-in-berlin-top.pdf
    • http://www.gorillawalker.com/hooked-on-triathlons-an-article-from-florida-bar-news-html.pdf
    • http://www.gorillawalker.com/pep-guardiola-another-way-of-winning-by-balague-guillem-2013.pdf
    • http://www.gorillawalker.com/true-digital-control-statistical-modelling-and-non-minimal-state-space.pdf
    • http://www.gorillawalker.com/seismic-system-design-concepts-for-a-california-rapid-earthquake-assessment.pdf
    • http://www.gorillawalker.com/a-guide-to-curriculum-mapping-planning-implementing-and-sustaining-the.pdf
    • http://www.gorillawalker.com/hacker-debugging-uncovered-uncovered-series.pdf
    • http://www.gorillawalker.com/don-catrin-de-la-fachenda-spanish-edition.pdf
    • http://www.gorillawalker.com/2007-minnesota-manufacturers-register.pdf
    • http://www.gorillawalker.com/diary-of-a-wimpy-enderman-book-3-an-unofficial-minecraft.pdf
    • http://www.gorillawalker.com/c-programming-success-in-a-day-beginners-guide-to-fast.pdf
    • http://www.gorillawalker.com/aura.pdf
    • http://www.gorillawalker.com/the-ethical-executive-becoming-aware-of-the-root-causes-of.pdf
    • http://www.gorillawalker.com/beloved-prisoner.pdf
    • http://www.gorillawalker.com/superconductivity-cambridge-monographs-on-physics.pdf
    • http://www.gorillawalker.com/the-mozart-effect-music-for-newborns-a-bright-beginning.pdf
    • http://www.gorillawalker.com/asvab-afqt-crash-course-book-online-military-asvab-test-preparation.pdf
    • http://www.gorillawalker.com/101-best-sex-scenes-ever-written-an-erotic-romp-through.pdf
    • http://www.gorillawalker.com/sign-language-research-theoretical-issues.pdf
    • http://www.gorillawalker.com/single-page-web-applications-javascript-end-to-end.pdf
    • http://www.gorillawalker.com/cowboy-life-the-letters-of-george-philip.pdf
    • http://www.gorillawalker.com/tap-the-magic-tree.pdf
    • http://www.gorillawalker.com/mary-alice-peale-american-diaries.pdf
    • http://www.gorillawalker.com/macroeconomics-10th-edition-pearson-series-in-economics.pdf
    • http://www.gorillawalker.com/spelling-rules.pdf
    • http://www.gorillawalker.com
    • 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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