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://coretry.ru/uplcv?utm_term=maths+practice+book+for+class+6+pdf PDF link annotation

  • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/dtt5mvv7gf37c5bg3tiago0m5o/rarejariwefirujorevaser.pdfIn PDF document text
  • http://consorzio-csa.it/userfiles/files/13505162506.pdfIn PDF document text
  • http://benthanhsgfarm.com/images/uploads/files/40744420694.pdfIn PDF document text
  • http://studiodispirito.it/userfiles/file/64323840321.pdfIn PDF document text
  • https://zenithoverseas.com/assets/userfiles/files/11485866639.pdfIn PDF document text
  • http://dokumsuzgec.com/userfiles/files/nisifogesevonalajimunite.pdfIn PDF document text
  • https://gamepinleri.com/calisma2/files/uploads/sogagukamafalob.pdfIn PDF document text
  • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/v7tvg4kqti1bc4f101f92icpul/fapuramitokigofu.pdfIn PDF document text
  • http://musorcentrum.hu/files/article/file/pesuset.pdfIn PDF document text
  • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613e149e3ec3c---nexuked.pdfIn PDF document text
  • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/57fc8f7b479e07239c007ba90efacbd2/78636930341.pdfIn PDF document text
  • http://qianxi.cn/filespath/files/20210919214655.pdfIn PDF document text
  • https://actsonics.com/uploads/files/202109022259516097.pdfIn PDF document text
  • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16147416f84b92---33690558745.pdfIn PDF document text
  • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/60a942c30a3b47c30967df05a2eb141d/23670890564.pdfIn PDF document text
  • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/m0h287gslq41gh7li3cuatn876/71996322709.pdfIn PDF document text
  • https://serviceservice.eu/userfiles/file/62898749459.pdfIn PDF document text
  • http://cokhiminhhien.com/media/ftp/file/depimujikadotemiviv.pdfIn PDF document text
  • http://gardatrans.com/content/Files/13835387882.pdfIn PDF document text
  • https://fizjolech.pl/userfiles/file/34956055782.pdfIn PDF document text
  • http://old.bgk-meshkova.com/ckeditor/ckfinder/userfiles/files/gopanupezu.pdfIn PDF document text
  • http://liderzy.natura2000.pl/imgturysta/files/58714374995.pdfIn PDF document text
  • http://hourinkan.net/js/upload/files/tidaravusude.pdfIn PDF document text
  • http://muzeumostrowiec.pl/obrazy/file/godilodogewiziziwovub.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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