Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• 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://hiddencliff.kr/FileData/ckfinder/files/20210628_A88D0CB13C104B75.pdf In PDF document text

  • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/4phhp1f9q2ilf8mbltlq8li1e6/47097613677.pdfIn PDF document text
  • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160801268450cb---34412192943.pdfIn PDF document text
  • https://candbco.com/ckfinder/userfiles/files/basakupuwuvukugiwi.pdfIn PDF document text
  • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9ace8465ac---89833134874.pdfIn PDF document text
  • http://studiotecnicoprato.eu/userfiles/files/vanajiwupigajufodikafiz.pdfIn PDF document text
  • http://ps173queens.com/clients/10779/File/sekuz.pdfIn PDF document text
  • https://jhservice.net/imagenes/galeria/files/42641431087.pdfIn PDF document text
  • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/023867aa6bbd92a1dd9c6849361e6b80/jileto.pdfIn PDF document text
  • http://abacusnancy.com/userfiles/file/33938667410.pdfIn PDF document text
  • http://paradisetourkorea.com/FileData/ckfinder/files/20210716_F279D48B13DA0166.pdfIn PDF document text
  • https://keyseries.us/userfiles/file/xugiliwisebiwujaxot.pdfIn PDF document text
  • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/1a77be44bfe11fac7e5589adb4ed9551/fizisekubuwidavixamizifo.pdfIn PDF document text
  • https://maribon.net/app/webroot/files/userfiles/files/babijune.pdfIn PDF document text
  • https://combrooncom.com/contents//files/mujiloviripotonolonapuvib.pdfIn PDF document text
  • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/6e7986926019c0b00baf178f71a1b067/xuxikav.pdfIn PDF document text
  • http://yuanhebiotech.com/upload/files/8097878730.pdfIn PDF document text
  • http://studiotecnicoforace.eu/userfiles/files/jikadojulubiluvopij.pdfIn PDF document text
  • http://tlxzkj.com/uploads/file/312154504140.pdfIn PDF document text
  • http://clinicaveterinariamontecchia.com/userfiles/files/xunumuxokixupumoboj.pdfIn PDF document text
  • http://olympiad-bigben.ru/ckfinder/userfiles/files/24582247161.pdfIn PDF document text
  • http://tylincms.com/userfiles/files/mobubevap.pdfIn PDF document text
  • http://kiavysocina.cz/UserFiles/File/78902456874.pdfIn PDF document text
  • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/2333744ed1d52eb0cfdf311ea1c419cf/59097621144.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=ews+online+form+pdfPDF link annotation
  • 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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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