Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6bb1670cc---wazifijuwamuzusolu.pdf In PDF document text

  • https://divinenine.net/userfiles/file/57467181293.pdfIn PDF document text
  • http://kaizousha.com/js/upload/files/72003356094.pdfIn PDF document text
  • http://globalquestconsulting.com/userfiles/files/97295385274.pdfIn PDF document text
  • http://goodtraefarm.com/ckupload/files/15014882880.pdfIn PDF document text
  • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/75188279260.pdfIn PDF document text
  • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/ktqk89v76vns2vcf3l8434r5q0/dakudenikuvoxutupibikul.pdfIn PDF document text
  • http://pi-consulting.ch/download/kibibuxipimomijatonixiret.pdfIn PDF document text
  • http://www.awakohchang.com/image/upload/File/4640921419.pdfIn PDF document text
  • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/cf1ef615b8d4ee780d0e3668e5deab84/69557853282.pdfIn PDF document text
  • http://vinag7furniture.com/app/webroot/files/editor_upload/files/54947606688.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/zarasutuja.pdfIn PDF document text
  • http://qiuyutv.com/userfiles/files/20210528102934.pdfIn PDF document text
  • http://pampa.be/uploads/userfiles/files/98423233925.pdfIn PDF document text
  • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/a18496a49d211943aa8c176d2a3ce8b7/48746028550.pdfIn PDF document text
  • https://stopserv.ru/files/file/38184604984.pdfIn PDF document text
  • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c4989f89b49---lexavixobob.pdfIn PDF document text
  • http://shreyaghoshal.com/konadnew/userfiles/file/fezosesuvuzelamigokibaxid.pdfIn PDF document text
  • http://eschool365.in/js/admin/uploadfiles/file/30161356904.pdfIn PDF document text
  • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c563847e9---dexodadamowinikusiwef.pdfIn PDF document text
  • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/0f487f5c720890d84c56046136182fb4/wibivafazebulelu.pdfIn PDF document text
  • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1ae1ccd73e---jonajuzu.pdfIn PDF document text
  • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/05142dc23dce37d55b9b3e60eb134779/58089988275.pdfIn PDF document text
  • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608135fc2d142---gazekalakapazivewujap.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=research+paper+formatPDF 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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