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.com/wix?keyword=dau+pha+thuong+khung+298 In PDF document text

  • http://sosix.mymonocle.com.au/uploads/1/3/1/6/131607062/2417990.pdfIn PDF document text
  • http://files.aseslp2.com/uploads/1/3/2/7/132741535/gijipa-bunazijanirul-baboporatulotu.pdfIn PDF document text
  • http://winas.recraftandrelic.com/uploads/1/3/0/7/130776255/vilumuzoke_topifejefuguve.pdfIn PDF document text
  • http://muraruxa.mathwitheeesinc.com/uploads/1/3/1/3/131398589/4357360.pdfIn PDF document text
  • http://bonalamin.tunedinteachers.com/uploads/1/3/1/6/131606289/2b98f7acbda6.pdfIn PDF document text
  • http://bataruki.rapidpcb.com/uploads/1/3/2/6/132681692/8406689.pdfIn PDF document text
  • http://files.acechr.ca/uploads/1/3/1/4/131437981/1409618.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://7e89f606-9ae6-4760-8fe5-505044dc1feb.filesusr.com/ugd/7d2910_7046a5c817b74e32991cb3f76d0927e3.pdf?index=trueIn PDF document text
  • https://d1108f04-c195-42c1-95b6-9f13daba10c4.filesusr.com/ugd/268ab1_b439f3cee1a7433da22c158034f66a0f.pdf?index=trueIn PDF document text
  • https://b3717081-5f00-480a-92e1-db367a8936af.filesusr.com/ugd/ea78e0_c09885fc5b4d4ed99cc9f87775c9a820.pdf?index=trueIn PDF document text
  • https://9e5410e1-f891-455c-9131-40d1918546cb.filesusr.com/ugd/15d534_914a5c7a16a7485ebff26796452a8d1a.pdf?index=trueIn PDF document text
  • https://87487d8b-5079-4d4e-ad0b-f733071e8629.filesusr.com/ugd/8e6e76_725bd1d8f00d4219a2520dd16f8e204e.pdf?index=trueIn PDF document text
  • https://0440c3b7-4169-49d2-9881-ad057e920ccb.filesusr.com/ugd/76dd3d_3fcfebe6bc8c4dc092e695d9cf2fcb9a.pdf?index=trueIn PDF document text
  • https://9411bd8d-d7b7-4676-bf9c-8a01baf1d8d5.filesusr.com/ugd/e7e4a0_0e5d30c0994b4dae94acc3f7454bdeec.pdf?index=trueIn PDF document text
  • https://9375e084-0356-4d97-891c-7e1f837ebc58.filesusr.com/ugd/2486b5_c4cc6defc6e7400b90634a2291d42c1f.pdf?index=trueIn PDF document text
  • https://ee4d5a06-81e0-4a01-8f75-4a8a9d24eb77.filesusr.com/ugd/b27199_7d1fc9e1e2b741dfb82a2d5f03ce7237.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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