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.me/123?keyword=diagram+of+a+leaf+with+label In PDF document text

  • https://cdn-cms.f-static.net/uploads/4387046/normal_5f972ab098c31.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4425728/normal_5f98a74824f80.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4424400/normal_5f996e119cf37.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365627/normal_5f86f3f69e1bc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383692/normal_5f8e9894cb6bc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4392193/normal_5f8e2b530f331.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382629/normal_5fa04c8b2b1c1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408720/normal_5f95677d4464d.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/b7b6d1f1-3425-4867-9723-8ae6ae47c7a4/69748014943.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/66203ffe-9f3e-4ee9-8b53-699c4edcef21/addition_and_subtraction_worksheets_for_1st.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f9b797ad-e45b-46fc-8b2a-8c09d34e38f4/36186081038.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/computer_hardware_learning_sinhala.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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