Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://lozipotod.ru/123?utm_term=secr+gdce+answer+key+2019 PDF link annotation

  • https://kiwerulokakawe.weebly.com/uploads/1/3/4/5/134509827/f1bd8584085d13.pdfIn PDF document text
  • https://pekamolotoli.weebly.com/uploads/1/3/4/6/134696990/gezako.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378378/normal_6041a6e3a90c5.pdfIn PDF document text
  • https://vifoxofanope.weebly.com/uploads/1/3/4/6/134670603/xilinenifiz.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4476938/normal_602e664b70154.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381971/normal_5fd3242be7684.pdfIn PDF document text
  • https://rafesotel.weebly.com/uploads/1/3/4/3/134321319/449f145d984d.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4371809/normal_5fddfa17b903f.pdfIn PDF document text
  • https://jupavovol.weebly.com/uploads/1/3/4/3/134314217/06a6c538d0e9cc9.pdfIn PDF document text
  • https://kofivenemiwelew.weebly.com/uploads/1/3/1/3/131380814/xotevurazu.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4405687/normal_604028a143378.pdfIn PDF document text
  • https://tusujowifavenag.weebly.com/uploads/1/3/1/4/131453847/c840bda2c.pdfIn PDF document text
  • https://witabavuwimob.weebly.com/uploads/1/3/4/3/134339013/ziname.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4463005/normal_600731106dfba.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4467586/normal_606412767a7f5.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/83524e03-926d-4429-973f-fbe9916898a7/watajilavupinakaw.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/52f5f979-0269-4d28-9d30-497dc89b4083/christmas_white_lights_string_light.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1cb150a6-7614-4261-a376-f5955337a341/38759236069.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ceb0ef3b-be73-4d0b-9bd0-e9cf2c790de4/how_to_find_sample_standard_deviation_on_ti-30xs.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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