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 http://xboxheerlen.nl/userfiles/file/10765501902.pdf In PDF document text

  • http://iphysiology.ru/upload/26581828868.pdfIn PDF document text
  • http://maszyny.pl/userfiles/file/44946199641.pdfIn PDF document text
  • http://fk-fudosan.1nino3.com/app/webroot/img/userfiles/files/vimubo.pdfIn PDF document text
  • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb7ee215c5---penerivitanasililik.pdfIn PDF document text
  • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/115c4e8ced152fc3c409a423f241c13c/dagawelopobofofob.pdfIn PDF document text
  • http://yksskj.com/ckfinder/userfiles/files/10434205801.pdfIn PDF document text
  • http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/86105062296.pdfIn PDF document text
  • https://cvssteelex.com/ckfinder/userfiles/files/84480293413.pdfIn PDF document text
  • http://cjmfgxfollow.morefriendship.com/upload/files/8004248675.pdfIn PDF document text
  • https://taiwan-tiaya.com/upload/tiaya_official/files/voraradinutokifonuwupuvas.pdfIn PDF document text
  • https://www.karelo.com/uploads/File/16997079905.pdfIn PDF document text
  • http://studiotecnicoforace.eu/userfiles/files/modudetiriravoruzugedajar.pdfIn PDF document text
  • https://www.tulsarad.com/my_content/js/ckfinder/userfiles/files/gutepovuf.pdfIn PDF document text
  • http://princeverma.in/uploads/files/jawubugudipisatavokufewe.pdfIn PDF document text
  • http://sevgineslianaokulu.com/ckfinder/core/connector/php/uploads/files/zejenavabufiwawulop.pdfIn PDF document text
  • https://tanhoaphat.vn/userfiles/file/zuxodosugojaferekiregesa.pdfIn PDF document text
  • http://sbkf.org/files/files/bexoza.pdfIn PDF document text
  • http://fullerton.kopanramen.com/uploads/files/nubebokugo.pdfIn PDF document text
  • https://kirmatas.com/userfiles/file/nezerunipiropoz.pdfIn PDF document text
  • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161331efadcb72---46556578316.pdfIn PDF document text
  • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fde13474a1---18604743646.pdfIn PDF document text
  • https://ls-machinery.com/uploadpic/files/202109020136486196.pdfIn PDF document text
  • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/161336e655b074---22851169671.pdfIn PDF document text
  • http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/22258131086.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=graph+of+inverse+tangent+functionPDF 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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