Malicious PDF — malware analysis report

Heuristics 5

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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 https://ggtraff.ru/123?keyword=plural+form+of+nouns+worksheets+grade+1 In PDF document text

  • https://cdn-cms.f-static.net/uploads/4372378/normal_5f8b4ae0e1d1e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380701/normal_5f8b693b34f8f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365546/normal_5f8a29187b9d5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370268/normal_5f8b0ab4df325.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4373264/normal_5f8b242189b4f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366676/normal_5f8a6ea2d197c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377408/normal_5f8a15d9170f3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375890/normal_5f8bbb8c5a5c1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376359/normal_5f8aec7adf642.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375080/normal_5f8b20828f545.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365652/normal_5f8754416ebb6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367621/normal_5f8a96fb6b26f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367951/normal_5f87a24c526d8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368996/normal_5f88cbe5f0cd7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366388/normal_5f89c76538061.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4373797/normal_5f8b05988f532.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/99d81357-cbe2-48c9-8c3a-0afe4f5bd245/majubawuz.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3f891b06-17e6-412a-8fb8-da7005246692/40040276609.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cb64d132-1cdf-429d-bfe9-08689930f5f9/wupokususibo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/216ed31d-559a-4f48-8872-f7f1ecbed4e5/tenopudunoxibew.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0465/0860/5590/files/comparative_guide_to_nutritional_supplements_2017.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/0622/1214/files/yle_test_flyers.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/prepositions_of_place_test_with_pictures.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/4469/0843/files/new_holland_workmaster_50_operators_manual.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/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://scripts.sil.org/OFLIn PDF document text

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