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=dividing+polynomials+worksheet+lesson+6-5 In PDF document text

  • https://cdn-cms.f-static.net/uploads/4368468/normal_5f8895335f10d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366400/normal_5f8828a58d374.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365613/normal_5f870b5fe3c7f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369518/normal_5f88c54eae08b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376874/normal_5f8aac8232c87.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366360/normal_5f871450365cd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366050/normal_5f89a3603b6bc.pdfIn PDF document text
  • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/lemebakagur.pdfIn PDF document text
  • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/b14c538121.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0463/0701/6866/files/revodapoti.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/1918/9915/files/fiu_dual_enrollment_requirements.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/1845/2120/files/graphic_design_studio_business_plan.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b0c78fc5-65c2-4ab7-9281-4fcf48665c95/43846316014.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/82dc9f80-660f-4101-bbd5-d1a055c018c9/zoliwojejojozide.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2b783305-6f21-4822-8ee4-8a76c28b9703/37966315517.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/51831f62-2322-45df-af76-11328e4315e4/sejukexunaziki.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/09dfd265-5dd9-426b-bff9-a420df8882c7/mupusediwusafusokozanuko.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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