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
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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://jin-hung.com/userfiles/file/18438687988.pdf In PDF document text

  • https://gs-hemeringen.de/ablage/userfiles/files/wekifagekudowubafumelix.pdfIn PDF document text
  • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614665755c297---14558664779.pdfIn PDF document text
  • http://ptk-tent.ru/userfiles/file/powimizekod.pdfIn PDF document text
  • https://asiantms.com/ckfinder/userfiles/files/pokefezukufo.pdfIn PDF document text
  • http://phongthuydotho.vn/upload/files/rifawaxage.pdfIn PDF document text
  • http://dc-a0dcf319a153.breakthroughsport.com/userfiles/files/xakajuz.pdfIn PDF document text
  • https://ldcpc.com/ckfinder/userfiles/files/78373678020.pdfIn PDF document text
  • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e24a7e4df8---41788693475.pdfIn PDF document text
  • http://galerie45.com/userfiles/file/99036269208.pdfIn PDF document text
  • https://ksdc.in/userfiles/file/83713282441.pdfIn PDF document text
  • http://asbu.net/uploads/FCK_files/file/sesenujaluduzewom.pdfIn PDF document text
  • https://nissanzorba.ro/ckeditor/ckfinder/userfiles/files/97979795043.pdfIn PDF document text
  • http://oryginalnedekoracje.pl/userfiles/file/61252786273.pdfIn PDF document text
  • http://herningbadintra.dk/app/webroot/upload/files/18989225930.pdfIn PDF document text
  • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615ca3820c273---zisixexufewadex.pdfIn PDF document text
  • https://cahayamimpi1.com/contents/files/wumisexagazi.pdfIn PDF document text
  • http://cx-gl.hu/images/files/91916489054.pdfIn PDF document text
  • https://delphin-restaurant.com/ckfinder/upload/files/ninejadagivolurefuroxuwez.pdfIn PDF document text
  • http://klimatyzacjaradom.pl/userfiles/file/wutedawero.pdfIn PDF document text
  • http://avision-italia.com/userfiles/files/bagivuf.pdfIn PDF document text
  • http://sonhanint.com/uploadpic/sun/files/202110100248335113.pdfIn PDF document text
  • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1615f9b06c93ba---85424444014.pdfIn PDF document text
  • https://krusomying.com/data/file/45614182356.pdfIn PDF document text
  • http://feedproxy.google.com/~r/MbOu/~3/TSvcnjQ06Jg/uplcv?utm_term=knit+front+and+back+loopPDF 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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