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/aws?keyword=isolation+of+plant+pathogenic+bacteria+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4405641/normal_5f94aad25acba.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368998/normal_5f8975b6a59a3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365546/normal_5f871971ea01d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4407085/normal_5f928fb6e5233.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372104/normal_5f925ba23bda5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368742/normal_5f8b4dfb28c74.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384839/normal_5f9595746d4f3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372972/normal_5f9099d8562b6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8bcba9a7547.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4409621/normal_5f93c7b37357f.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008a01.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008a01.bin)
  • https://cdn.shopify.com/s/files/1/0501/5247/2764/files/schindlers_list_theme_piano.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/4305/9862/files/linear_vs_nonlinear_functions_worksheet.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3e2941b9-2639-4d12-a381-5d7c894372b2/microbiology_an_introduction_tortora.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/43487b1a-432f-4ec3-abfd-334175438f00/48651073149.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/31776882177.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/9654/8524/files/39530335437.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0486/4324/4200/files/commonly_misspelled_words_4th_grade_worksheet.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_off00008a01.bin)

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