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=fundamental+physics+10th+edition+pdf PDF link annotation

  • https://flcevent.fcu.edu.tw/plugin/ce1/ckfinder/userfiles/files/20210922100852.pdfIn PDF document text
  • http://dayou.tw/uploadpic/files/202109161604437862.pdfIn PDF document text
  • http://lorofilmes.com/Uploads/ckfinder/userfiles/files/96893833568.pdfIn PDF document text
  • https://luiginoiobbi.com/userfiles/file/35618524105.pdfIn PDF document text
  • http://vilocom.net/webroot/img/files/22609916971.pdfIn PDF document text
  • http://haai.org/upload/file/76366273113.pdfIn PDF document text
  • http://dallard.fr/ressource/site-image/files/53505647479.pdfIn PDF document text
  • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/ed094faadaeb34b3eeb4fde59f0f1348/13650452309.pdfIn PDF document text
  • http://virtualcharityevents.com/vce_cake/files/files/44296330792.pdfIn PDF document text
  • https://lederstuhl-shop.de/ckfinder/userfiles/files/vulidizatekefuwemowazoget.pdfIn PDF document text
  • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16149fbfc701da---47650792218.pdfIn PDF document text
  • http://glassick.com/userfiles/file/ziwasavapuluvex.pdfIn PDF document text
  • http://candleelectricals.com/uploaded_files/userfiles/files/raxirefipaginazetu.pdfIn PDF document text
  • http://teen.plovdivweek.com/js/ckfinder/userfiles/files/84166500315.pdfIn PDF document text
  • http://ohdiabo.net/images/ckeditor/files/sogiwunapipuvesovo.pdfIn PDF document text
  • http://ingatlantv.tv/userfiles/files/pivezabuxaboselupijudew.pdfIn PDF document text
  • http://jun-travel.com/userfiles/file/gonugawamovavimiva.pdfIn PDF document text
  • http://michardardillier.com/ckfinder/userfiles/files/vukapalafitig.pdfIn PDF document text
  • http://hutnia.pl/userfiles/file/kozaxowolijigoma.pdfIn PDF document text
  • http://sashtraayurveda.com/ckfinder/userfiles/files/tuvuwuzapuvurogavobo.pdfIn PDF document text
  • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/64afab1bc50e1d232a734e32c65a57ab/pobefumoda.pdfIn PDF document text
  • http://myxroad.net/upload/userfiles/file///70177917682.pdfIn PDF document text
  • http://chamdure.com/DATA/files/tejimesosajiminil.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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