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=nominative+functions+of+nouns+worksheets+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4368485/normal_5f8b4057da847.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388421/normal_5f8f5992e8d8f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366961/normal_5f8bd64ad7e8e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381534/normal_5f8f746e76e73.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4377109/normal_5f923c7752c67.pdfIn PDF document text
  • https://megeleju.weebly.com/uploads/1/3/4/3/134319984/8498870.pdfIn PDF document text
  • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/rugatu-rugot.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367279/normal_5f890b6385508.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4417308/normal_5f963d9974ac9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369774/normal_5f883c5a0473e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4405904/normal_5f95bf49b3e9e.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005161.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005161.bin)
  • https://cdn.shopify.com/s/files/1/0479/2670/6343/files/open_android_studio_terminal_linux.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/22c191fb-4111-4f11-8605-6e1855cf2ca1/73729558480.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d5c4ac62-f6ed-461f-be51-63d3f2675e2d/jodupurojigizegire.pdfIn PDF document text
  • https://s3.amazonaws.com/wonoti/gununeko.pdfIn PDF document text
  • https://s3.amazonaws.com/fasanag/gaxepunizibimefejeva.pdfIn PDF document text
  • https://s3.amazonaws.com/vaxebisapesi/73246472664.pdfIn PDF document text
  • https://s3.amazonaws.com/rupatojuko/sickle_cell_anemia_who.pdfIn PDF document text
  • https://s3.amazonaws.com/wexoteluwag/74956591618.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_off00005161.bin)

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