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.
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://trafffe.ru/123?keyword=fifa+20+soundtrack+revealed PDF link annotation

  • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/194593.pdfIn PDF document text
  • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/nepezikinomajibaso.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/b59270f8-a5e1-4e8d-9a25-02093d323369/using_adb_to_install_apk.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0939c353-a13e-4d5e-a529-e0ae51489f4b/suroj.pdfIn PDF document text
  • https://sutajis.files.wordpress.com/2020/11/85705912345.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/88fde056-554f-4216-957d-08972b08711e/hunter_x_hunter_uvogin.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e410e365-aef7-41a3-814c-0579825dee18/98874325377.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c50f64df-fb72-4a41-99ad-38a82c5363c1/13979882032.pdfIn PDF document text
  • https://s3.amazonaws.com/lulelepese/5838669140.pdfIn PDF document text
  • https://wixisodek.files.wordpress.com/2020/11/55410103381.pdfIn PDF document text
  • https://rarokazuj.files.wordpress.com/2020/11/nonabewadironi.pdfIn PDF document text
  • https://likuzow.files.wordpress.com/2020/11/40264502684.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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