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.me/wix?keyword=common+and+proper+nouns+worksheets+for+fifth+grade

  • http://jefuv.nursinghomeneglectatty.com/uploads/1/3/0/7/130775971/vowumu-wufezunefosaf-xebibalagixuva.pdf
  • http://files.buskedisi.com/uploads/1/3/1/3/131379833/1d33a9f80.pdf
  • http://files.elitelifecoaching.net/uploads/1/3/0/8/130814055/teseloti_virogetofosawep.pdf
  • http://files.jeremydalmas.com/uploads/1/3/0/7/130739684/db24c8.pdf
  • http://files.chazstyles.com/uploads/1/3/1/6/131636972/jetiwe_wufumer.pdf
  • http://rufeg.hannibaltruechurch.com/uploads/1/3/1/4/131453541/504167.pdf
  • http://gofali.mywstudiospa.com/uploads/1/3/1/4/131407558/pameta_nixopamotobi.pdf
  • http://www.ascendercorp.com/
  • http://www.ascendercorp.com/typedesigners.html
  • https://cdn.shopify.com/s/files/1/0440/7413/9813/files/file_to_jpg_online.pdf
  • https://a8d9b0f1-5c56-43cc-a235-bc1d3af3e996.filesusr.com/ugd/99b222_b56318adf35a462792891a192241bafe.pdf?index=true
  • https://1e47f1be-14f7-46f6-8845-f07f355ea6cb.filesusr.com/ugd/1d64af_1fc2a92150974f8aa8e6775b823bb958.pdf?index=true
  • https://38ad57c5-7b0f-4539-91b7-ca8e2c9febc3.filesusr.com/ugd/debdc1_a78d136e7f0b4c17901edac65b829fcf.pdf?index=true
  • https://60853ce2-f2cf-4d67-b8e8-294a515d8efd.filesusr.com/ugd/f99735_3606171bbdd64b1090c7780f050b839d.pdf?index=true
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://scripts.sil.org/OFL

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