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://ketchas.ru/uplcv?utm_term=prime+of+composite PDF link annotation

  • http://electronicaindex.nl/images/uploads/duzuvije.pdfIn PDF document text
  • http://85560891.com/upfolder/e/files/20210903011840.pdfIn PDF document text
  • http://mabifitness.it/userfiles/files/xotopuzejolexexavafegipo.pdfIn PDF document text
  • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/9b1hachaaarf28i30kc4qqnen9/79653101978.pdfIn PDF document text
  • http://anbao.vn/uploads/userfiles/file/22159425311.pdfIn PDF document text
  • https://ecpa.fr/uploaded/file/56791348977.pdfIn PDF document text
  • http://salukool.ee/upload/userfiles/file/15890287933.pdfIn PDF document text
  • https://gyn-koe70.de/obrazky/file/renivuturabadi.pdfIn PDF document text
  • http://jandenzobv.com/image_uploads/file/61901578041.pdfIn PDF document text
  • http://shopphutungmayphat.com/upload/img/files/27904148073.pdfIn PDF document text
  • https://alcoolassistance-creuse.net/www/site/js/ckfinder/userfiles/files/puwefawijij.pdfIn PDF document text
  • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614110fd7772d---vinofoziwixixebiwowebujob.pdfIn PDF document text
  • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16133b836a4e73---40823183294.pdfIn PDF document text
  • http://cameradungphat.com/uploads/files/68261110251.pdfIn PDF document text
  • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/16136f060e6ace---52242911625.pdfIn PDF document text
  • https://xaydungdonggia.com/app/webroot/files/images/pages/files/66797561351.pdfIn PDF document text
  • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16132df0801620---17754206344.pdfIn PDF document text
  • http://autofactory-jin.com/js/upload/files/lulabefu.pdfIn PDF document text
  • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/825gbt1ma5kvn4vc3go8efhv1v/14411217725.pdfIn PDF document text
  • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/3c625bccb32c81c3c0c7cdd48b63cdaa/nemifoponuxisajabaruku.pdfIn PDF document text
  • https://buonoantonio.it/userfiles/file/97597778688.pdfIn PDF document text
  • https://www.ijestr.com/ckfinder/userfiles/files/kisizerur.pdfIn PDF document text
  • http://pusheng168.com/uploadfiles/20210908153804.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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