Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Security software disable instruction high SE_SECURITY_BYPASS
  Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://traffset.ru/123?keyword=autocad+2020+serial+key+crack PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4367624/normal_5f875936753f4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366976/normal_5f977c0ece37d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4411493/normal_5fa3cbf68c236.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367286/normal_5f95d134ad979.pdfIn PDF document text
  • https://nebemono.weebly.com/uploads/1/3/4/3/134331812/xijeboradisexibe.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4463792/normal_5fa38ac21ab51.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367911/normal_5f87616add872.pdfIn PDF document text
  • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/dikud.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://wupolekofajo.files.wordpress.com/2020/11/kufitaroguwidi.pdfIn PDF document text
  • https://nevosaxovib.files.wordpress.com/2020/11/vuvemi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ecb02a21-911a-47d0-8947-0f434f3ca833/bill_cosby_today_news.pdfIn PDF document text
  • https://jenedima.files.wordpress.com/2020/11/ejemplos_de_aminas_con_formula_y_nombre.pdfIn PDF document text
  • https://kuwilalo.files.wordpress.com/2020/11/zelijego.pdfIn PDF document text
  • https://zatejoru847961968.files.wordpress.com/2020/11/72489844693.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e94867da-46c7-407f-8dd9-048cbc0f862a/persona_4_golden_books_guide.pdfIn PDF document text
  • https://fodatus857065.files.wordpress.com/2020/11/steve_wilkos_show_episode_guide.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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