Malicious PDF — malware analysis report

Static analysis result for SHA-256 436b644599c77fd4…

MALICIOUS

PDF

46.3 KB Created: 2018-11-14 11:21:23 +03:00 Authoring application: Acrobat PDFMaker 15 for Word (via Adobe PDF Library 15.0)
MD5: 9c6581448fbfd6a97ed5fbe0a46a2a05 SHA-1: 0e5dd48712eba06fa0ee54748bdee6b28eea01b9 SHA-256: 436b644599c77fd433ee089d4418d75ea2f3e961b62a7f33361b4314b6c55bd3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded URLs pointing to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a coordinated effort to direct users to external resources. The primary goal appears to be SEO manipulation or the distribution of further malicious content via these linked PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8709

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-2013-2018-world-outlook-for-irritable-bowel-syndrome-ibs.pdf
    • http://www.gorillawalker.com/the-million-dollar-man-rich-dominant-boss-controls-employees-in.pdf
    • http://www.gorillawalker.com/ugly-as-sin-why-they-changed-our-churches-from-sacred.pdf
    • http://www.gorillawalker.com/a-woman-rides-the-beast-the-roman-catholic-church-and.pdf
    • http://www.gorillawalker.com/thinking-about-insanity-religion-and-terrorism-answers-to-frequently-asked.pdf
    • http://www.gorillawalker.com/five-stages-of-greek-religion.pdf
    • http://www.gorillawalker.com/notable-men-and-women-of-spanish-texas.pdf
    • http://www.gorillawalker.com/russia-and-the-west-in-the-teaching-of-the-slavophiles.pdf
    • http://www.gorillawalker.com/ashes-of-honor-an-october-daye-novel-october-daye-series.pdf
    • http://www.gorillawalker.com/look-out-for-litter-cloverleaf-books-planet-protectors.pdf
    • http://www.gorillawalker.com/breweries-of-wisconsin-north-coast-books.pdf
    • http://www.gorillawalker.com/bedtime-stories-for-the-very-young.pdf
    • http://www.gorillawalker.com/the-passenger-has-gone-digital-and-mobile-accessing-and-connecting.pdf
    • http://www.gorillawalker.com/day-to-day-runner-s-diary-the-essential-52-week.pdf
    • http://www.gorillawalker.com/disgaea-2-cursed-memories-the-official-strategy-guide.pdf
    • http://www.gorillawalker.com/debating-the-origins-of-the-cold-war-american-and-russian.pdf
    • http://www.gorillawalker.com/love-medicine-new-and-expanded-version.pdf
    • http://www.gorillawalker.com/city-of-wisdom-and-blood-fortunes-of-france-book-2.pdf
    • http://www.gorillawalker.com/kazakhstan-in-pictures-visual-geography-second-series.pdf
    • http://www.gorillawalker.com/hidden-order-a-thriller-the-scot-harvath-series.pdf
    • http://www.gorillawalker.com/advanced-strength-and-applied-elasticity-4th-edition.pdf
    • http://www.gorillawalker.com/algebra-for-college-students-6th-edition.pdf
    • http://www.gorillawalker.com/high-performance-computing-in-automotive-design-engineering-and-manufacturing-proceedings.pdf
    • http://www.gorillawalker.com/feminized-cuckold.pdf
    • http://www.gorillawalker.com/a-history-of-army-aviation-from-its-beginnings-to-the.pdf
    • http://www.gorillawalker.com/marine-reinforced-plastics-construction-manufacture-and-repair.pdf
    • http://www.gorillawalker.com/the-world-of-music.pdf
    • http://www.gorillawalker.com/the-bible-in-english-its-history-and-influence.pdf
    • http://www.gorillawalker.com/british-fashion-designers-mini.pdf
    • http://www.gorillawalker.com/batman-vol-4-zero-year-secret-city-the-new-52.pdf
    • http://www.gorillawalker.com/better-homes-gardens-american-patchwork-quilting-2006-calendar-instructions-and.pdf
    • http://www.gorillawalker.com/handbook-of-geriatric-drug-therapy.pdf
    • http://www.gorillawalker.com/antitrust-civil-jury-instructions-section-of-antitrust-law-aba.pdf
    • http://www.gorillawalker.com/away-out-over-everything-the-olympic-peninsula-and-the-elwha.pdf
    • http://www.gorillawalker.com/coffee-2016-pocket-planner.pdf
    • http://www.gorillawalker.com/age-matters-re-aligning-feminist-thinking.pdf
    • http://www.gorillawalker.com/in-godzilla-s-footsteps-japanese-pop-culture-icons-on-the.pdf
    • http://www.gorillawalker.com/integrated-approach-of-mitigating-seedling-mortality-of-chilli-using-trichoderma.pdf
    • http://www.gorillawalker.com/a-treatise-upon-modern-instrumentation-and-orchestration-containing-an-exact.pdf
    • http://www.gorillawalker.com/developments-in-polymer-synthesis-and-characterization-macromolecular-symposia.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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