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=google%20logo%20clear%20background In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366312/normal_5f8724ea6e5c5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366312/normal_5f89a315c423e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366957/normal_5f87399acd6eb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368735/normal_5f89386b8a09c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369629/normal_5f895d4d98225.pdfIn PDF document text
  • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/912726.pdfIn PDF document text
  • https://nudopimiga.weebly.com/uploads/1/3/1/0/131070212/xaxetogavujufos.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367668/normal_5f8754029095c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372377/normal_5f8c9505a59af.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369922/normal_5f8acdbe7869c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379723/normal_5f8ccc4893df9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370762/normal_5f8abe26dda82.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005e53.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005e53.bin)
  • https://uploads.strikinglycdn.com/files/fbc01199-bfa2-42c4-b5ea-05ddc5bdbd18/juwike.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6576520e-2c15-47a5-ad3b-e64d705a6087/similizuvidozesunavi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/500780de-2324-48fb-8fea-67bb6e39d799/73030747280.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2aedee75-dfc5-4d80-8016-70706367dfb0/65805945200.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/95559720-d439-4e63-a3c3-3fd544a50ba2/sagefolelelaje.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/16085a2c-e6b8-498e-82b2-e225a75fcf3a/24244878330.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2b1cf04c-2798-425b-88be-f88b3acc6cc9/rosupikovero.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6a03ac69-ef26-46f6-953d-d31dba76fa62/17335402563.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_off00005e53.bin)

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