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=air+on+a+g+string+piano+sheet+music+pdf In PDF document text

  • https://misutinulil.weebly.com/uploads/1/3/1/4/131407711/wutoto.pdfIn PDF document text
  • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
  • https://raralafelu.weebly.com/uploads/1/3/4/4/134476833/daxepozox.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372987/normal_5f8d56b687bbc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379473/normal_5f953f26e72d3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376087/normal_5f90475f63c10.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382003/normal_5f8b7f69d4c4e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4373502/normal_5f8bfb8e6e5fa.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369486/normal_5f90b1a1ae9d2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413239/normal_5f9620254f6de.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367964/normal_5f8dc93db9713.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380705/normal_5f8d9b15b0607.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408989/normal_5f9332018176f.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00005962.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00005962.bin)
  • https://s3.amazonaws.com/henghuili-files2/najezenarotidalokoro.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files2/86106563813.pdfIn PDF document text
  • https://s3.amazonaws.com/zakunafu/addis_ababa_map.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/971b3303-02a3-41fe-9737-4b266999dcef/25950408858.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cde0d788-d3d6-4adc-8c37-b2d21d176a9b/devolugugek.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c701fdf5-4149-452d-9e3c-0ff68169d2d2/91970820827.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_01_sfnt_off00005962.bin)

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