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=calypso+software+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4365661/normal_5f871bfd58a25.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384461/normal_5f8d3e2833c96.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378390/normal_5f95b4c721548.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369322/normal_5f887e31accdd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376120/normal_5f8e3a9127344.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387589/normal_5f8ee27093a47.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413862/normal_5f94bb5e6db81.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e07.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e07.bin)
  • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a3bd.bin)
  • https://uploads.strikinglycdn.com/files/28542fbe-995c-4892-9efa-8112f22d9ba7/bidilam.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/67c6f979-44bc-41a2-af06-0b1398b563ad/10613139725.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c0374eb1-befa-4268-8ab5-01da614a6b08/94350102233.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/00a8d5f0-6f20-4de4-bff5-ea16d6fff43a/44107411830.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2901a8f2-4a10-48f1-ac0b-1539dc7ef17a/84099191162.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/2916/6242/files/cambridge_ielts_listening_test_4_answer_key.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0439/1570/6523/files/18449030719.pdfIn PDF document text
  • https://s3.amazonaws.com/jozetej/aquaponic_system_design_manual.pdfIn PDF document text
  • https://s3.amazonaws.com/tesodagiwor/54560443084.pdfIn PDF document text
  • https://s3.amazonaws.com/bizamesuwepe/25273066896.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/37655c53-3ce1-456d-a405-9eec8d65ccbb/vujuzipajejowesi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/51d3e10f-d675-48a2-b07e-589ee4c94aae/35632222947.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0b9a2b9c-2527-4ed6-8029-551992d6601a/watirolukifuxukigi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/eac35f7c-ed45-43fe-8fcf-7781d481aaf0/34195499832.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_off00006e07.bin)

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