Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b206da6fe98d8d2…

MALICIOUS

PDF

45.5 KB Created: 2019-02-14 08:26:20 +03:00 Authoring application: calibre 0.9.10 [http://calibre-ebook.com] (via PoDoFo - http://podofo.sf.net)
MD5: b20ae17363a3635b211dc03754ba76ba SHA-1: 7d2e685cbb0b1858311152f2f78bc48493c494a1 SHA-256: 8b206da6fe98d8d2b8e7f0ee86e6e73ab1f9f5c4b96dc67eaf2eb0148300ee89
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a large number of embedded links to external PDF files hosted on the same domain. This behavior is indicative of a link farm or a method to distribute malicious content disguised as legitimate documents. The primary attack pattern observed is the mass distribution of external links, likely to manipulate search engine results or to serve as a lure for users to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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/bradshaw-s-hand-book-to-the-turkish-empire-volume-1.pdf
    • http://www.gorillawalker.com/presentation-skills-for-introverts.pdf
    • http://www.gorillawalker.com/hug-your-people-the-proven-way-to-hire-inspire-and.pdf
    • http://www.gorillawalker.com/steck-vaughn-timeline-graphic-novels-individual-student-edition-levels-7.pdf
    • http://www.gorillawalker.com/the-new-day-an-autobiography-entrepreneur-s-guide-spiritual-primer.pdf
    • http://www.gorillawalker.com/keepers-of-the-garden-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/heart-s-design-a-contemporary-christian-romance-kindle-edition.pdf
    • http://www.gorillawalker.com/future-diary-vol-4.pdf
    • http://www.gorillawalker.com/ilts-social-science-political-science-117-teacher-certification-test-prep.pdf
    • http://www.gorillawalker.com/encyclopedia-of-american-spy-films.pdf
    • http://www.gorillawalker.com/sit-on-top-kayaking-a-beginner-s-guide.pdf
    • http://www.gorillawalker.com/the-wet-grassland-guide-managing-floodplain-and-coastal-wet-grasslands.pdf
    • http://www.gorillawalker.com/data-reconciliation-and-gross-error-detection-an-intelligent-use-of.pdf
    • http://www.gorillawalker.com/engels-a-very-short-introduction-very-short-introductions.pdf
    • http://www.gorillawalker.com/geology-of-carbonate-reservoirs-the-identification-description-and-characterization-of.pdf
    • http://www.gorillawalker.com/basic-business-statistics-global-edition.pdf
    • http://www.gorillawalker.com/concise-cardiology-an-evidence-based-handbook.pdf
    • http://www.gorillawalker.com/interstate-cooperation-second-edition-compacts-and-administrative-agreements.pdf
    • http://www.gorillawalker.com/the-beggar-king-a-hangman-s-daughter-tale-unabridged-audible.pdf
    • http://www.gorillawalker.com/los-angeles-99-the-complete-guide-to-hollywood-beverly-hills.pdf
    • http://www.gorillawalker.com/ida-b-wells-barnett-a-voice-against-violence-great-african.pdf
    • http://www.gorillawalker.com/children-s-understanding-of-death-from-biological-to-religious-conceptions.pdf
    • http://www.gorillawalker.com/avizandum-statutes-on-scots-commercial-and-consumer-law-2010-2011.pdf
    • http://www.gorillawalker.com/rapid-visual-screening-of-buildings-for-potential-seismic-hazards-a.pdf
    • http://www.gorillawalker.com/la-vita-nuova.pdf
    • http://www.gorillawalker.com/third-reich-fake-medals-and-badges-vol-1-army-war.pdf
    • http://www.gorillawalker.com/the-common-core-companion-the-standards-decoded-grades-3-5.pdf
    • http://www.gorillawalker.com/postman-pat-in-muddle-and-other-stories-the-new-adventures.pdf
    • http://www.gorillawalker.com/writin-is-fightin-thirty-seven-years-of-boxing-on-paper.pdf
    • http://www.gorillawalker.com/for-love-of-jody.pdf
    • http://www.gorillawalker.com/basic-theories-of-traditional-chinese-medicine-chinese-edition.pdf
    • http://www.gorillawalker.com/economic-social-and-cultural-rights-in-international-law-contemporary-issues.pdf
    • http://www.gorillawalker.com/harnessing-microstation-v8i.pdf
    • http://www.gorillawalker.com/breastfeeding-and-human-lactation.pdf
    • http://www.gorillawalker.com/atlas-of-operative-procedures-in-surgical-oncology.pdf
    • http://www.gorillawalker.com/in-defence-of-empirical-psychology-psychology-revivals.pdf
    • http://www.gorillawalker.com/california-algebra-1-skills-practice-workbook.pdf
    • http://www.gorillawalker.com/officer-ruger-k-9-detective-kindle-edition.pdf
    • http://www.gorillawalker.com/46th-publication-design-annual.pdf
    • http://www.gorillawalker.com/dvd-production-a-practical-resource-for-dvd-publishers.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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