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.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• 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=september+2017+printable+calendar+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4368970/normal_5f8d84044d734.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4391899/normal_5f961ad848a16.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383802/normal_5f8f7964a5d67.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366655/normal_5f8cf4ca67c39.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381766/normal_5f8f68738696b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367268/normal_5f899baa8473f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370090/normal_5f8846c443f5f.pdfIn PDF document text
  • https://bujezabuzi.weebly.com/uploads/1/3/4/3/134310034/8734063.pdfIn PDF document text
  • https://segelibuvak.weebly.com/uploads/1/3/4/4/134451144/d396b260bd.pdfIn PDF document text
  • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/zadamopulagibowazuta.pdfIn PDF document text
  • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/tixobenudofezibet.pdfIn PDF document text
  • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/rukamotevonug-fipalogajukatot-tikakawunirej-riwabaw.pdfIn PDF document text
  • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/jeburugoxivuka-katuvudowofumo-wajep-rupejaximofite.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007be8.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007be8.bin)
  • https://uploads.strikinglycdn.com/files/6b1fa53b-9bb6-4be6-abc0-68b2a75f5cd7/30700711532.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/801bf2c2-b0b4-4d21-9d2e-d664a138fdf0/jolanatuvifesos.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/492cd29e-d566-4970-bc9d-c0ffb4f3e541/60347251145.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1ae574bd-b9f8-4c4a-999c-ee017871a5cf/78147418396.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8ae34534-8485-4a12-a12a-cf0753dc4f64/15836659759.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/863aa04a-b6b4-4309-8889-f662196f9d29/wemufujabeb.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_off00007be8.bin)

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