Malicious PDF — malware analysis report

Heuristics 6

• 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.
• PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
  PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
• 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/wb?keyword=addition%20and%20subtraction%20worksheet%20for%203rd%20grade In PDF document text

  • https://cdn-cms.f-static.net/uploads/4388158/normal_5f8e984f0e9d0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4389606/normal_5f944e23c73e1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366995/normal_5f89a8947a52f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4420260/normal_5f967101190fb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388427/normal_5f930ad6a7208.pdfIn PDF document text
  • https://s3.amazonaws.com/sabegokek/bajaj_bike_spare_parts_name_list.pdfIn PDF document text
  • https://s3.amazonaws.com/fowikorejodi/81067778573.pdfIn PDF document text
  • https://s3.amazonaws.com/pisik/definicion_de_analisis_de_riesgo.pdfIn PDF document text
  • https://s3.amazonaws.com/sisaxu/nukamizu.pdfIn PDF document text
  • https://s3.amazonaws.com/pegek/autodesk_sketchbook_user_guide.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367667/normal_5f875bc2c3430.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368972/normal_5f8fd960da677.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4373297/normal_5f8e8a0757567.pdfIn PDF document text
  • https://morekifozolil.weebly.com/uploads/1/3/4/3/134332894/tuwavoxejekape.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375071/normal_5f919d288d5af.pdfIn PDF document text
  • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/vimugun.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006d9e.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006d9e.bin)
  • https://uploads.strikinglycdn.com/files/98624999-6128-41fe-ba0b-6c74590d08e9/fesaxe.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c4587a19-5e70-4939-a7f5-21a0e43a139b/meluravuvasufuxamevexalu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cad00cf8-236f-4fe2-bd6c-697bd07f200c/38993412134.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 extracted file (font_00_sfnt_off00006d9e.bin)

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