Malicious PDF — malware analysis report

Static analysis result for SHA-256 5af46a8116552e57…

MALICIOUS

PDF

42.9 KB Created: 2019-04-08 04:53:23 +03:00 Authoring application: pdftk 1.44 - www.pdftk.com (via itext-paulo-155 (itextpdf.sf.net-lowagie.com))
MD5: cbb43ee56f713a47940c29d05691c89a SHA-1: 4e0ea67d73d14571b246044f7a7809d7fef197b8 SHA-256: 5af46a8116552e57200681d18c39354edaa84a4b55089122b5c1bcd978bc52fc
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute additional malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of outbound links suggests a malicious intent to redirect the user to potentially harmful content.

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/the-bad-sitter.pdf
    • http://www.gorillawalker.com/passion-serena-s-submission-book-3.pdf
    • http://www.gorillawalker.com/vitamin-b6-therapy-nature-s-versatile-healer.pdf
    • http://www.gorillawalker.com/funny-jokes-for-kids-kids-joke-books-volume-2.pdf
    • http://www.gorillawalker.com/the-lost-dictionary-a-history-of-the-chin-people-the.pdf
    • http://www.gorillawalker.com/emiliano-zapata-coleccion-popular-fondo-de-cultura-economica-spanish-edition.pdf
    • http://www.gorillawalker.com/the-rucksack-war-u-s-army-operational-logistics-in-grenada.pdf
    • http://www.gorillawalker.com/tibet-a-history.pdf
    • http://www.gorillawalker.com/evil-in-amsterdam-nancy-drew-hardy-boys-super-mysteries-17.pdf
    • http://www.gorillawalker.com/principles-of-fermentation-technology-second-edition.pdf
    • http://www.gorillawalker.com/building-an-igloo.pdf
    • http://www.gorillawalker.com/finding-infinity-infinity-series-volume-3.pdf
    • http://www.gorillawalker.com/lee-an-abridgement.pdf
    • http://www.gorillawalker.com/mini-s-a-g-a-s-bedfordshire-and-cambridgeshire.pdf
    • http://www.gorillawalker.com/time-thomas-edison-his-electrifying-life.pdf
    • http://www.gorillawalker.com/damned-nation-hell-in-america-from-the-revolution-to-reconstruction.pdf
    • http://www.gorillawalker.com/the-bond-fund-advisor-understanding-the-risks-and-rewards.pdf
    • http://www.gorillawalker.com/biomechanics-in-sport-performance-enhancement-and-injury-prevention-the-encyclopaedia.pdf
    • http://www.gorillawalker.com/gregory-crewdson-dream-of-life.pdf
    • http://www.gorillawalker.com/natural-foods-cookbook-vegetarian-dairy-free-cuisine.pdf
    • http://www.gorillawalker.com/the-best-ever-book-of-homosexual-jokes-lots-and-lots.pdf
    • http://www.gorillawalker.com/advanced-concert-studies-for-trumpet.pdf
    • http://www.gorillawalker.com/hoodoo-medicine-gullah-herbal-remedies-revised-edition.pdf
    • http://www.gorillawalker.com/the-color-of-snow.pdf
    • http://www.gorillawalker.com/dancing-by-mrs-lilly-grove-and-other-writers-with-musical.pdf
    • http://www.gorillawalker.com/a-tiny-itsy-bitsy-gift-of-life-an-egg-donor.pdf
    • http://www.gorillawalker.com/the-gilmore-girls-companion-hardback.pdf
    • http://www.gorillawalker.com/physics-for-scientists-and-engineers-with-modern-physics-international-edition.pdf
    • http://www.gorillawalker.com/zero-to-one-million-how-i-built-a-company-to.pdf
    • http://www.gorillawalker.com/walking-for-weight-loss-the-6-week-fat-elimination-plan.pdf
    • http://www.gorillawalker.com/back-office-and-operational-risk-symptoms-sources-and-cures.pdf
    • http://www.gorillawalker.com/on-flexibility-recovery-from-technological-and-doctrinal-surprise-on-the.pdf
    • http://www.gorillawalker.com/the-aerodynamics-of-powered-flight.pdf
    • http://www.gorillawalker.com/la-protection-contre-les-risques-financiers-et-la-responsabilit.pdf
    • http://www.gorillawalker.com/to-wake-the-living-the-time-stone-trilogy-volume-2.pdf
    • http://www.gorillawalker.com/the-coin-collector-s-survival-manual-6th-edition.pdf
    • http://www.gorillawalker.com/the-day-the-elephant-sat-on-our-car.pdf
    • http://www.gorillawalker.com/the-turnip-princess-and-other-newly-discovered-fairy-tales-penguin.pdf
    • http://www.gorillawalker.com/bauxites-volume-1-developments-in-soil-science.pdf
    • http://www.gorillawalker.com/quicksilver-a-facsimile-of-b-i-o-s-report-no.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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