Malicious PDF — malware analysis report

Static analysis result for SHA-256 707e25689da5dc3d…

MALICIOUS

PDF

33.6 KB Created: 2019-09-02 19:57:54 +03:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.10) First seen: 2021-06-28
MD5: 9ab872a95f03593059eb01fd4171e7be SHA-1: 469a486c92587d9d9899d8af4e8f326097645e6d SHA-256: 707e25689da5dc3d3883feaf4c44b54ee339c72129a99c543ea3091d71c85310
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, as detected by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine results or to distribute a large number of potentially malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/ten-queens-portraits-of-women-of-power.pdf In PDF document text
    • http://www.gorillawalker.com/dressage-horsing-around.pdfIn PDF document text
    • http://www.gorillawalker.com/creative-stamping-with-mixed-media-techniques-paperback.pdfIn PDF document text
    • http://www.gorillawalker.com/health-and-environmental-risk-analysis-volume-2-fundamentals-with-applications.pdfIn PDF document text
    • http://www.gorillawalker.com/warren-g-magnuson-and-the-shaping-of-twentieth-century-america.pdfIn PDF document text
    • http://www.gorillawalker.com/blind-children-learn-to-read.pdfIn PDF document text
    • http://www.gorillawalker.com/multiplication-and-division-smarts-math-smarts.pdfIn PDF document text
    • http://www.gorillawalker.com/arlene-shechet-all-at-once.pdfIn PDF document text
    • http://www.gorillawalker.com/rousseau-judge-of-jean-jacques-dialogues-collected-writings-of-rousseau.pdfIn PDF document text
    • http://www.gorillawalker.com/introduction-to-corporate-finance-f370-i-core-finance-component-kelley.pdfIn PDF document text
    • http://www.gorillawalker.com/handbook-of-breast-mri-cambridge-medicine.pdfIn PDF document text
    • http://www.gorillawalker.com/the-impressionists-first-discovery-art.pdfIn PDF document text
    • http://www.gorillawalker.com/country-walks-near-boston-country-walks-book.pdfIn PDF document text
    • http://www.gorillawalker.com/nols-wilderness-navigation-nols-library.pdfIn PDF document text
    • http://www.gorillawalker.com/detergents-the-handbook-of-environmental-chemistry-anthropogenic-compounds.pdfIn PDF document text
    • http://www.gorillawalker.com/ready-to-use-vocabulary-word-analysis-comprehension-activities-first-grade.pdfIn PDF document text
    • http://www.gorillawalker.com/pharmaceutical-project-management-second-edition-drugs-and-the-pharmaceutical-sciences.pdfIn PDF document text
    • http://www.gorillawalker.com/soul-guardians-3-book-collection-netherworld-4-seirs-5-mortal.pdfIn PDF document text
    • http://www.gorillawalker.com/always-remembered-never-forgotten-series-book-3.pdfIn PDF document text
    • http://www.gorillawalker.com/the-oxford-handbook-of-science-fiction-oxford-handbooks.pdfIn PDF document text
    • http://www.gorillawalker.com/bad-deal-surviving-southside.pdfIn PDF document text
    • http://www.gorillawalker.com/scarface-the-beginning-v-1.pdfIn PDF document text
    • http://www.gorillawalker.com/orioles-backyard-bird-series.pdfIn PDF document text
    • http://www.gorillawalker.com/teacher-s-guide-segundo-paso-a-la-cultura-step-into.pdfIn PDF document text
    • http://www.gorillawalker.com/by-benjamin-branfman-the-little-book-of-giant-puns-bring.pdfIn PDF document text
    • http://www.gorillawalker.com/webtutor-tm-on-blackboard-1-term-6-months-printed-access.pdfIn PDF document text
    • http://www.gorillawalker.com/berets-bras-coming-together-tabooty-book-8.pdfIn PDF document text
    • http://www.gorillawalker.com/in-love-with-life-reflections-on-friedrich-nietzsche-s-thus.pdfIn PDF document text
    • http://www.gorillawalker.com/the-new-etiquette-guide-to-getting-married-again.pdfIn PDF document text
    • http://www.gorillawalker.com/harmonic-materials-bk-cass.pdfIn PDF document text
    • http://www.gorillawalker.com/god-loves-ugly-love-makes-beautiful.pdfIn PDF document text
    • http://www.gorillawalker.com/agyptisches-worterbuch-ii-mittleres-reich-und-zweite-zwischenzeit-kulturgeschichte-der.pdfIn PDF document text
    • http://www.gorillawalker.com/studies-in-crime-an-introduction-to-forensic-archaeology-batsford.pdfIn PDF document text
    • http://www.gorillawalker.com/structural-biology-of-the-complement-system.pdfIn PDF document text
    • http://www.gorillawalker.com/pirate-radio-stations-tuning-in-to-underground-broadcasts-in-the.pdfIn PDF document text
    • http://www.gorillawalker.com/mark-twain-s-homes-and-literary-tourism-mark-twain-and.pdfIn PDF document text
    • http://www.gorillawalker.com/go-figure-using-math-to-answer-everyday-imponderables.pdfIn PDF document text
    • http://www.gorillawalker.com/easy-45-hungarian-recipes.pdfIn PDF document text
    • http://www.gorillawalker.com/beast-breeds-beauty-collection-3-shifter-breeding-stories.pdfIn PDF document text
    • http://www.gorillawalker.com/tropical-crops-monocotyledons.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

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