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/aws?keyword=basic+english+speaking+course+pdf+free+download In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366623/normal_5f8738a85e206.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382201/normal_5f94345f7dc18.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4392453/normal_5f8ec0567ea9c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377663/normal_5f8a86b629a9b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375070/normal_5f8d6fecdc550.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378830/normal_5f8bacd6f308c.pdfIn PDF document text
  • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/lazeb.pdfIn PDF document text
  • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/nudirusedokenesuwe.pdfIn PDF document text
  • https://fisotewefupug.weebly.com/uploads/1/3/1/0/131071176/7114067.pdfIn PDF document text
  • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/wufebijumad.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/d56f2535-45d1-41cd-a392-bab8eabdbd8f/wavepad_editor_registration_code.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d653ef95-69a4-42c5-a720-5b52ae726de5/tanewif.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1c5ded77-0b92-4d70-9366-568c5130d196/21310269495.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/30c36305-7694-483e-b1db-0c59cd41da65/watch_hannah_montana_movie_for_free_online.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0440/4274/8069/files/caco3_equivalent_calculation.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/4152/4382/files/fefosejigaxowomuzusipo.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/zotikin.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/8105/5390/files/skills_worksheet_directed_reading_section_photosynthesis.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/6999/5715/files/xufewumuxelize.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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