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://ttraff.link/wix?keyword=when+was+the+age+of+imperialism In PDF document text

  • http://files.pacehighchoir.com/uploads/1/3/1/8/131871891/2056809.pdfIn PDF document text
  • http://files.andybutfoy.com/uploads/1/3/1/4/131407459/1167986.pdfIn PDF document text
  • http://nabiwule.uptownwadesboro.com/uploads/1/3/1/6/131607310/3525069.pdfIn PDF document text
  • http://files.kahuiakokimotueka.com/uploads/1/3/1/6/131607075/bipanubuwejewi-vitovofa.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/9997/8904/files/51516648573.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/5662/7866/files/56635798108.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/ielts_reading_academic_practice_test.pdfIn PDF document text
  • https://7ee8ab93-3c0d-4c40-8037-370d7484e02c.filesusr.com/ugd/46bfb0_ba718245816444c29143eb0bc004753b.pdf?index=trueIn PDF document text
  • https://3e3c00ee-8de9-4c33-9e72-b259cb753d2e.filesusr.com/ugd/45fd81_ac1e6a9cd3664c40b13aa92ef0d42b8b.pdf?index=trueIn PDF document text
  • https://6edb9083-e0b3-4abb-800f-78587b5ea3b0.filesusr.com/ugd/1b0481_1104e00d89554472a92312e73c4e7dc1.pdf?index=trueIn PDF document text
  • https://1c8dd7f2-3206-49b0-92e6-d594db2b52da.filesusr.com/ugd/b7306e_77173b6a8d304336b910bf5949586cbe.pdf?index=trueIn PDF document text
  • https://c7b3caa5-5511-4334-82ba-bb953aa0059b.filesusr.com/ugd/136d3d_87b77f6b4d394363b6c169d83833b2da.pdf?index=trueIn 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 PDF document text

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