Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5aa51cad8b9c86e…

MALICIOUS

PDF

32.0 KB Created: 2020-02-08 21:00:59 +03:00 Authoring application: - (via Foxit Phantom Printer Version 3.0.3.0804)
MD5: a272fe2e65c0bd1b011fc8367e78ce6e SHA-1: 8bce73b69d946498119c90f4a10e58aeca27fab4 SHA-256: f5aa51cad8b9c86e0890723e8d23239e387c761c3f42e83301c912feb342c9c1
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a large number of embedded links to external PDF files, suggesting a link farm or SEO poisoning attack. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with 32 external links, many of which are to book-related titles. No scripts were extracted from this sample, and the document body contained mostly obfuscated data. The attack pattern is likely to leverage these links for malicious purposes, such as distributing further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8447

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/canterbury-tales-everyman-s-library-poetry-the-drama-no-307.pdf
    • http://www.gorillawalker.com/complete-maus-a-survivor-s-tale-hc-2011-25th-anniversary.pdf
    • http://www.gorillawalker.com/vocabulary-connections-level-h-steck-vaughn-vocabulary-connections.pdf
    • http://www.gorillawalker.com/managing-urban-tourism-themes-in-tourism.pdf
    • http://www.gorillawalker.com/beijing-china-guide-to-the-international-city.pdf
    • http://www.gorillawalker.com/the-complete-woodblock-prints-of-yoshida-hiroshi.pdf
    • http://www.gorillawalker.com/regimes-of-legalities-ethnography-of-criminal-cases-in-south-asia.pdf
    • http://www.gorillawalker.com/snowmobile-and-atv-accident-investigation-and-reconstruction-second-edition.pdf
    • http://www.gorillawalker.com/jewish-run-concentration-camps-in-the-soviet-union.pdf
    • http://www.gorillawalker.com/the-elements-corobar-volume-1.pdf
    • http://www.gorillawalker.com/fundamentals-of-discrete-structures-2nd-edition.pdf
    • http://www.gorillawalker.com/sinful-confessions-cynfell-brothers-book-1.pdf
    • http://www.gorillawalker.com/the-abduction-from-the-seraglio-kalmus-edition.pdf
    • http://www.gorillawalker.com/cosmopolitan-conceptions-ivf-sojourns-in-global-dubai.pdf
    • http://www.gorillawalker.com/oral-and-maxillofacial-surgery-clinical-practice-manual.pdf
    • http://www.gorillawalker.com/los-grandes-misterios-de-la-historia-the-great-mysteries-of.pdf
    • http://www.gorillawalker.com/dirty-work-the-cia-in-western-europe.pdf
    • http://www.gorillawalker.com/testing-of-asic-and-fpga-circuits-vlsi-testing-and-verification.pdf
    • http://www.gorillawalker.com/travels-of-a-photographer-in-china-1933-1946.pdf
    • http://www.gorillawalker.com/disaster-recovery-second-edition.pdf
    • http://www.gorillawalker.com/what-s-fair-ethics-for-negotiators.pdf
    • http://www.gorillawalker.com/getting-to-know-lego-mindstorms-code-power-a-teen-programmer.pdf
    • http://www.gorillawalker.com/blue-ribbon-trail-ride-horses-and-friends.pdf
    • http://www.gorillawalker.com/windows-system-programming-paperback-4th-edition-addison-wesley-microsoft-technology.pdf
    • http://www.gorillawalker.com/if-i-die-in-a-combat-zone-paladin-books.pdf
    • http://www.gorillawalker.com/assembly-language-for-intel-based-computers-5th-edition.pdf
    • http://www.gorillawalker.com/how-prints-look-photographs-with-a-commentary-beacon-paperback.pdf
    • http://www.gorillawalker.com/advances-in-horticulture-v-9-plantation-and-spice-crops.pdf
    • http://www.gorillawalker.com/a-thousand-names-for-joy-living-in-harmony-with-the.pdf
    • http://www.gorillawalker.com/the-manly-eunuch-masculinity-gender-ambiguity-and-christian-ideology-in.pdf
    • http://www.gorillawalker.com/freshman-orientation-house-style-and-home-style.pdf
    • http://www.gorillawalker.com/japanese-army-in-world-war-ii-conquest-of-the-pacific.pdf
    • http://www.gorillawalker.com/lung-cancer-and-mesothelioma.pdf
    • http://www.gorillawalker.com/process-management-for-the-extended-enterprise-organizational-and-ict-networks.pdf
    • http://www.gorillawalker.com/seashells-2000-calendar.pdf
    • http://www.gorillawalker.com/snow-toward-evening-a-year-in-a-river-valley-nature.pdf
    • http://www.gorillawalker.com/the-songs-of-the-south-an-anthology-of-ancient-chinese.pdf
    • http://www.gorillawalker.com/fusarium-wilt-of-pigeonpea-cajanus-cajan-l-millsp-a-molecular.pdf
    • http://www.gorillawalker.com/anthem-for-a-nativity-from-the-liverpool-oratorio-choral-octavo.pdf
    • http://www.gorillawalker.com/fiber-optic-sensing-and-imaging.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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