Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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://trafftec.ru/aws?keyword=app+store+internet+explorer+11 PDF link annotation

  • https://palujiro.weebly.com/uploads/1/3/4/4/134491920/6366834.pdfIn PDF document text
  • https://topagolidokade.weebly.com/uploads/1/3/4/5/134502990/6ebff61e1.pdfIn PDF document text
  • https://bevalapiwilidi.weebly.com/uploads/1/3/4/5/134587476/dutizeb_bufijajegaj_lelelojemowolo.pdfIn PDF document text
  • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/tojewa.pdfIn PDF document text
  • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/1710a6.pdfIn PDF document text
  • https://kegazesawatodo.weebly.com/uploads/1/3/4/3/134378031/liwuvo.pdfIn PDF document text
  • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/mawozena-kewanobezure-saxekezato.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/adab264e-8fca-483f-b8e2-ee574aac3cab/korg_x50_manual.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c4c24254-f78c-481f-a00a-e16e6ee54f27/neuilly_sa_mere_2_streaming_complet_vf.pdfIn PDF document text
  • https://s3.amazonaws.com/tofizo/zuduzozebezebezog.pdfIn PDF document text
  • https://s3.amazonaws.com/bezegoluzose/equalizer_apk_for_pc.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2863511e-4f32-4f10-b324-8ccec11305f2/newitifuruvogatiretabo.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 PDF document text

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