Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab360fa35aec2aa…

MALICIOUS

PDF

43.1 KB Created: 2019-03-16 18:19:01 +03:00 Authoring application: calibre 0.9.10 [http://calibre-ebook.com] (via PoDoFo - http://podofo.sf.net)
MD5: 672f0ab31626e4634ccec0b3db09ee85 SHA-1: f4c52f79b79d5fd03a511c8f92b25e45ed4d9114 SHA-256: 7ab360fa35aec2aa6bd5055395a1c70c46a6d6d518c2142de996901ab1364efd
92 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 further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of its specific intent beyond link farming.

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/12-german-dances-woo-8-clarinet-2-part-qty-3.pdf
    • http://www.gorillawalker.com/david-mamet-a-life-in-the-theatre.pdf
    • http://www.gorillawalker.com/the-bells-of-easter-morning.pdf
    • http://www.gorillawalker.com/the-world-s-biggest-insects-world-s-biggest-animals.pdf
    • http://www.gorillawalker.com/reader-s-digest-family-health-guide.pdf
    • http://www.gorillawalker.com/curious-george-s-5-minute-stories.pdf
    • http://www.gorillawalker.com/the-hollow-complete-unabridged.pdf
    • http://www.gorillawalker.com/using-the-project-management-maturity-model-strategic-planning-for-project.pdf
    • http://www.gorillawalker.com/ar-15-m-16-5-56mm-handbook.pdf
    • http://www.gorillawalker.com/the-mountaineering-handbook-an-invitation-to-climbing.pdf
    • http://www.gorillawalker.com/treatment-of-children-with-down-syndrome-education-counseling-korean-edition.pdf
    • http://www.gorillawalker.com/an-introduction-to-thermogeology-ground-source-heating-and-cooling.pdf
    • http://www.gorillawalker.com/size-exclusion-chromatography-springer-laboratory.pdf
    • http://www.gorillawalker.com/mitochondrial-nutrition-and-mitochondrial-medicine-for-primary-care-conditions-text.pdf
    • http://www.gorillawalker.com/twelve-years-in-ethiopia-book-2-discoveries-kindle-edition.pdf
    • http://www.gorillawalker.com/the-life-of-dexter-k-king-the-rise.pdf
    • http://www.gorillawalker.com/the-new-economic-sociology-a-reader.pdf
    • http://www.gorillawalker.com/revenue-implications-of-trade-liberalization-occasional-paper-intl-monetary-fund.pdf
    • http://www.gorillawalker.com/capitalism-corporations-and-the-social-contract-a-critique-of-stakeholder.pdf
    • http://www.gorillawalker.com/nueva-geograf-a-de-colombia-spanish-edition.pdf
    • http://www.gorillawalker.com/two-degrees-west-a-walk-along-england-s-meridian.pdf
    • http://www.gorillawalker.com/ac-generators-design-applic-cl-electronic-and-electrical-engineering-research.pdf
    • http://www.gorillawalker.com/grammar-of-the-dialects-of-vernacular-syriac-as-spoken-by.pdf
    • http://www.gorillawalker.com/stitches-una-infancia-muda-a-memoir-spanish-edition.pdf
    • http://www.gorillawalker.com/soundpower-s-greatest-hits-bill-moffit-4-pitched-drums-4.pdf
    • http://www.gorillawalker.com/second-stringer.pdf
    • http://www.gorillawalker.com/the-last-bungalow-writings-on-allahabad.pdf
    • http://www.gorillawalker.com/god-so-loved-the-world-the-life-of-jesus.pdf
    • http://www.gorillawalker.com/kontakte.pdf
    • http://www.gorillawalker.com/the-visitor-sex-and-violence-in-a-galactic-empire-erotic.pdf
    • http://www.gorillawalker.com/barron-s-lsat-with-cd-rom-barron-s-lsat-law.pdf
    • http://www.gorillawalker.com/logit-and-probit-ordered-and-multinomial-models-quantitative-applications-in.pdf
    • http://www.gorillawalker.com/alleluja-from-regina-coeli-k-v-108-sheet-music-solo.pdf
    • http://www.gorillawalker.com/the-clockwork-dagger-a-novel-clockwork-dagger-novels-book-1.pdf
    • http://www.gorillawalker.com/pun-amok-the-word-game-with-crazy-clues.pdf
    • http://www.gorillawalker.com/the-al-qaeda-doctrine-the-framing-and-evolution-of-the.pdf
    • http://www.gorillawalker.com/dynamics-and-geomorphology-of-mountain-rivers-lecture-notes-in-earth.pdf
    • http://www.gorillawalker.com/exploring-cultural-history-living-in-1920s-america.pdf
    • http://www.gorillawalker.com/hematology-board-review-board-certification-in-hematology-book-1.pdf
    • http://www.gorillawalker.com/civil-procedure-preclusion-in-civil-actions-turning-point.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://calibre-ebook.com
    • http://ns.adobe.com/pdf/1.3/
    • http://podofo.sf.net
    • 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#
    +1 more URL(s)

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