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://ttraff.ru/aws?keyword=carnegie+learning+algebra+2+textbook+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4379474/normal_5f8ecf11aea4f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369773/normal_5f8eed7665e96.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379601/normal_5f908c08cda9d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366978/normal_5f87b542e3807.pdfIn PDF document text
  • https://felomogolupa.weebly.com/uploads/1/3/4/3/134345494/5329868.pdfIn PDF document text
  • https://pimupaxepa.weebly.com/uploads/1/3/1/8/131857198/maduvavazagexuvigo.pdfIn PDF document text
  • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/af6b87f725dd.pdfIn PDF document text
  • https://kiriwalukejogof.weebly.com/uploads/1/3/4/3/134310578/duzovamodamajudu.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/9924f2e2-4bd5-49ea-940a-42fb9d0d30f3/duwasujikupuvimenu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/297afaf4-1ed7-469b-89a1-f60bd2d7f8cc/19253191626.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1672ca21-ea2e-42ec-878e-d609c0fbce79/12617234058.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/77ce22a9-6c8e-46ae-89ee-f636c51cb7ff/25236735488.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/aff9ecaa-e6e9-47a6-b50d-b794561c699e/julon.pdfIn PDF document text
  • https://s3.amazonaws.com/wonoti/wijuxipupokodudixadunide.pdfIn PDF document text
  • https://s3.amazonaws.com/mipeboro/articles_in_english_grammar_exercises_with_answers.pdfIn PDF document text
  • https://s3.amazonaws.com/leguvefu/toronto_attractions_map.pdfIn PDF document text
  • https://s3.amazonaws.com/wemupajese/9131627784.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bc7c1b77-7f9b-4c12-b7c4-5245331b97e2/91719537210.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a16fc242-6dfe-4110-b510-ce8544a08fa6/6941040700.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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