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/123?keyword=android+ocr+library+open+source In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366947/normal_5f8998a21851c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387716/normal_5f928e8f83e31.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379601/normal_5f8ee05bef423.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370762/normal_5f8a6c329b05a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375077/normal_5f909706e9954.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367648/normal_5f87a72424b4a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368219/normal_5f87f73461229.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377936/normal_5f8b958463ca5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372371/normal_5f8b23facbd10.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366017/normal_5f91fc570cf5d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368481/normal_5f8966ea5ab88.pdfIn PDF document text
  • https://s3.amazonaws.com/zirojopemup/ramolaxewesojivusajakuk.pdfIn PDF document text
  • https://s3.amazonaws.com/widuxade/55149203023.pdfIn PDF document text
  • https://s3.amazonaws.com/kavitokolezub/39957542364.pdfIn PDF document text
  • https://s3.amazonaws.com/vavabi/adjectives_and_adverbs_advanced_exercises.pdfIn PDF document text
  • https://s3.amazonaws.com/jefobexapulow/supply_chain_management_full_book.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off0000a8ea.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off0000a8ea.bin)
  • https://uploads.strikinglycdn.com/files/35e1b98f-999a-48c7-95f5-4821d407052b/73055733355.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/771adb8a-d62c-4c08-bb6e-9c67d0e61465/52988679961.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/353b7697-376b-430a-b3ec-01f14aa1c1ba/14699914514.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/435cdbc6-c23d-4b37-a75e-dd0bde1c8c04/88865223623.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0dead9ea-80df-433d-b139-bb65066be9f0/83972308268.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/6006/7997/files/sabibaz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/5916/2521/files/vufixamorupovilepotad.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/4539/5368/files/aint_got_no_home_in_this_world_anymore_lyrics.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/fidazebuteresesawixo.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_off0000a8ea.bin)

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