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://cctraff.ru/123?keyword=all+grammar+tenses+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4379217/normal_5f8a3103a35d3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375515/normal_5f89de0c034c8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369935/normal_5f8978abed61f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370062/normal_5f8aeb74ca2d8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366384/normal_5f87529c4b692.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379035/normal_5f8a2c04a2939.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369305/normal_5f8865826bbb7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370985/normal_5f891a199a6e3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375083/normal_5f8a6da6e28c9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370987/normal_5f888eade1896.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379744/normal_5f8a83ac6ab70.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371013/normal_5f892b3cc056a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4373522/normal_5f8a262401607.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365660/normal_5f877f261741d.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/a7cf55c9-11e5-450c-87e2-e5300a75049d/pixumovanuluzun.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fac6b55d-88b9-4432-88f7-3e8124024b90/2456705165.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7aac705e-eeb9-4f7f-b93f-374d07404c1b/47993563373.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/00c7fe56-7355-445a-98bb-c14190af5722/95746937308.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a5872212-cf56-430d-9e64-6a33ef8c1a37/29832598217.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/6764/5852/files/jozujuwupixofitodab.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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