Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1774d9111af7b08…

MALICIOUS

PDF

44.1 KB Created: 2018-12-15 08:53:35 +03:00 Authoring application: www.freepdfconvert.com (via http://www.freepdfconvert.com)
MD5: f31a18c23baea19dcb72446463c6c973 SHA-1: 762e8ede28c39bfe95e92c6a0b50dfee6703b896 SHA-256: f1774d9111af7b0833a1d4d4dbf9a94e231b4105cccdf268b06d5ae047c27a7a
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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-20th-digital-avionics-systems-conference-space-aviation-s-next.pdf
    • http://www.gorillawalker.com/the-physics-of-the-early-universe-lecture-notes-in-physics.pdf
    • http://www.gorillawalker.com/consensual-transfers-of-distressed-real-estate-a-comprehensive-approach-to.pdf
    • http://www.gorillawalker.com/welcome-table-african-american-heritage-cooking.pdf
    • http://www.gorillawalker.com/35-vintage-sweater-knitting-patterns-from-the-1940-s-1960.pdf
    • http://www.gorillawalker.com/doing-business-in-emerging-markets.pdf
    • http://www.gorillawalker.com/yo-nunca-te-prometi-la-eternidad-i-never-promised-you.pdf
    • http://www.gorillawalker.com/raptus-poets-penguin.pdf
    • http://www.gorillawalker.com/audubon-engagement-calendar-2013.pdf
    • http://www.gorillawalker.com/southern-baptists-american-evangelicals-the-conversation-continues.pdf
    • http://www.gorillawalker.com/love-janis-a-revealing-new-biography-of-janis-joplin-with.pdf
    • http://www.gorillawalker.com/guia-para-un-loro-bien-adiestrado-guide-to-a-well.pdf
    • http://www.gorillawalker.com/milan-pocket-guide.pdf
    • http://www.gorillawalker.com/section-8-secrets-section-8-bible-series-volume-3-paperback.pdf
    • http://www.gorillawalker.com/south-island-weekend-tramps.pdf
    • http://www.gorillawalker.com/turkey-s-integration-into-the-european-union-legal-dimension.pdf
    • http://www.gorillawalker.com/peak-district-guide-to-30-of-the-best-walking-routes.pdf
    • http://www.gorillawalker.com/soccer-team-notebook.pdf
    • http://www.gorillawalker.com/nuevo-manual-de-usos-y-costumbres-de-los-tiempos-biblicos.pdf
    • http://www.gorillawalker.com/advances-in-epileptology-psychology-pharmacotherapy-and-new-diagnostic-approaches-international.pdf
    • http://www.gorillawalker.com/max-weber-and-the-new-century.pdf
    • http://www.gorillawalker.com/student-solutions-manual-for-larson-falvo-s-elementary-linear-algebra.pdf
    • http://www.gorillawalker.com/mcdougal-littell-world-history-patterns-of-interaction-eedition-cd-rom.pdf
    • http://www.gorillawalker.com/the-essential-homer-selections-from-the-iliad-and-the-odyssey.pdf
    • http://www.gorillawalker.com/el-viento-ligero-en-parma-clasicos-sexto-piso-spanish-edition.pdf
    • http://www.gorillawalker.com/the-kugler-system-volume-one-a-summary-of-life-insurance.pdf
    • http://www.gorillawalker.com/dreamcatcher-and-other-poems.pdf
    • http://www.gorillawalker.com/the-cambridge-world-history-volume-3.pdf
    • http://www.gorillawalker.com/radiant-state-the-wolfhound-century-kindle-edition.pdf
    • http://www.gorillawalker.com/strawberry-marshmallow-volume-3.pdf
    • http://www.gorillawalker.com/the-quality-solution-the-stakeholder-s-guide-to-improving-health.pdf
    • http://www.gorillawalker.com/now-i-can-die-in-peace-how-the-sports-guy.pdf
    • http://www.gorillawalker.com/family-maps-of-hempstead-county-arkansas.pdf
    • http://www.gorillawalker.com/morocco-international-road-map-maroc-marokko.pdf
    • http://www.gorillawalker.com/china-s-early-mosques-edinburgh-studies-in-islamic-art.pdf
    • http://www.gorillawalker.com/wills-of-the-archdeaconry-of-sudbury-1439-1474-wills-from.pdf
    • http://www.gorillawalker.com/writing-food-history-a-global-perspective.pdf
    • http://www.gorillawalker.com/the-truth-about-herpes.pdf
    • http://www.gorillawalker.com/essential-pathology-for-dental-students-pathology-practical-book-for-dental.pdf
    • http://www.gorillawalker.com/pathways-grade-7-sigi-s-fire-helmet-trade-book.pdf
    • http://www.gorillawalker.com/yo-nunca-te-prometi-la-eternida
    • 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://www.freepdfconvert.com
    • 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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