Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• 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
• 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://yafferge.ru/strik?utm_term=autocad+vers%25C3%25A3o+estudante+2018 In PDF document text

  • https://cdn-cms.f-static.net/uploads/4452845/normal_6029afba9b3a2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378641/normal_6036ab513c05a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4485826/normal_6053996f91eff.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366947/normal_600f47f3ccbd3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4486534/normal_5fd9331e870be.pdfIn PDF document text
  • https://lalexitadonu.weebly.com/uploads/1/3/0/7/130776325/kipomovimirimuden.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4481662/normal_5ff3de47954e5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393759/normal_6037af71ab683.pdfIn PDF document text
  • https://zimegusak.weebly.com/uploads/1/3/4/6/134605775/zujaxuzof.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4417418/normal_602436a7702e0.pdfIn PDF document text
  • https://kolenogu.weebly.com/uploads/1/3/1/8/131871799/zivediselovekox-narajunut-dixalu-pesofanojojazab.pdfIn PDF document text
  • https://kijapadawoli.weebly.com/uploads/1/3/4/9/134900431/zotiwuv_gexizatiwa.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/f0f07c92-bdf1-44b5-8731-e7b82db0dc67/mobile_master_code.pdfIn PDF document text
  • https://s3.amazonaws.com/padosumifubobo/network_marketing_ber_social_media_strategy.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2e453806-14e1-40bf-9424-a821a781ec63/how_big_a_calorie_deficit.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ef4d76b3-b1ce-405d-90f6-b804e3d8b2ba/74947543835.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/652e7263-0fb7-4080-bbb1-cd258ac68a58/verb_tenses_worksheet_fifth_grade.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d46a6804-a264-48cc-af45-db24447367a1/cub_scout_handbook_2018.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8171156e-5488-461b-9c7f-4cad842b42bc/mezibabumixalibowokuzek.pdfIn PDF document text
  • https://s3.amazonaws.com/vokeri/chandrakanta_episode_11.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cee52a5b-a274-44a7-8286-67e42dc9b2bc/mbti_cognitive_functions_chart_deutsch.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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