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
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://krisoc.ru/uplcv?utm_term=android+market+package+name PDF link annotation

  • http://sriraghavendratemple.com/ckfinder/userfiles/files/pijadowe.pdfIn PDF document text
  • http://gaudi.tw/upload/files/4475721009.pdfIn PDF document text
  • http://escrima-rlp.de/userfiles/file/32595633869.pdfIn PDF document text
  • http://tns-china.cn/editor_upload_image/file/63809080007.pdfIn PDF document text
  • http://hefei.chinatupai.com/web/js/ckfinder/userfiles/files/19361089597.pdfIn PDF document text
  • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b928d6b18a---29521530009.pdfIn PDF document text
  • http://qianxish.com/ckfind_image/files/femoguva.pdfIn PDF document text
  • http://laclonghotel.vn/upload/files/60393390462.pdfIn PDF document text
  • http://refpecsbelvaros.hu/kepek/files/45380910896.pdfIn PDF document text
  • https://trimix.bg/UserFiles/File/jogun.pdfIn PDF document text
  • https://futurefacesmiami.com/uploads/file/25360503932.pdfIn PDF document text
  • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/n46dprhip0dogrtoupiatagj1f/rekikozenewakapunug.pdfIn PDF document text
  • http://aviteksural.ru/admin/ckfinder/userfiles/files/rubakosegax.pdfIn PDF document text
  • http://www.portofmiamitunnel.com/system/js/back/ckfinder/userfiles/files/19626815939.pdfIn PDF document text
  • http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/lajijifusorozarevegunawi.pdfIn PDF document text
  • http://bjavc.com/filespath/files/20210911215249.pdfIn PDF document text
  • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/161319f079c0d3---87464116462.pdfIn PDF document text
  • http://sov.tranovice.org/webpagebuilder/ckfinder/userfiles/files/2357667065.pdfIn PDF document text
  • http://ambvetfanini.eu/userfiles/files/bubuvuzoponezazi.pdfIn PDF document text
  • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/701d79e589fa7dc470772528b5038c9e/96035216921.pdfIn PDF document text
  • http://skomi.ru/img/files/file/81730907753.pdfIn PDF document text
  • https://98ing.com/upload/ck/files/20210918_162636.pdfIn PDF document text
  • http://conniecorsentino.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/74489315682.pdfIn PDF document text
  • https://ubk-sad.de/azubi/userfiles/files/mililolegurapiwo.pdfIn PDF document text
  • https://topinsolventa.ro/userfiles/file/moguxujufeg.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://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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