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.link/123?keyword=mental+math+addition+worksheets+grade+4 In PDF document text

  • https://cdn-cms.f-static.net/uploads/4367299/normal_5f8c01717fe38.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366659/normal_5f8721b3059e6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369796/normal_5f8bbc51f0d1b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366389/normal_5f872adaa1e64.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376602/normal_5f8a5d736d211.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376856/normal_5f8a7571ba890.pdfIn PDF document text
  • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/45d140.pdfIn PDF document text
  • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279037.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366003/normal_5f8702d1f3f14.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376096/normal_5f8a841d95c02.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371523/normal_5f8b56f369a6f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366993/normal_5f873a6b82ec1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368958/normal_5f87b1021266c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366336/normal_5f89d43298690.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376619/normal_5f8a5cc3a34fe.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368985/normal_5f8affdccc227.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371553/normal_5f89b8dc095cf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366003/normal_5f8757d01c7ae.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006f08.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006f08.bin)
  • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a44f.bin)
  • 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 extracted file (font_00_sfnt_off00006f08.bin)

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