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=solubility+curves+worksheet+1 In PDF document text

  • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/zipape.pdfIn PDF document text
  • https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/f63a11f6e66d70c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374379/normal_5f8af312625e5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366018/normal_5f8739338c3ac.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366633/normal_5f8827646f75a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366340/normal_5f89c83472ac4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366010/normal_5f87033db2325.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366371/normal_5f872e75dd17b.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/1/0492/7848/4636/files/salem_keizer_schools_edge.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0485/3222/6203/files/degoxowi.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0477/5664/0412/files/boo_from_mario_costume.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b12ad7b8-c36d-4a8c-aa51-951edd5603a0/37552274443.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/adb722dc-f3a5-4631-85b5-88deaeca5449/32247738196.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1fece9dd-a2e9-4afb-9d31-041d4e977d9a/50440558871.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f4f606e0-94cf-483b-885c-818780bb0529/25731180078.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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