Malicious PDF — malware analysis report

Heuristics 7

• 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 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://chcial.ru/uplcv?utm_term=how+to+uninstall+system+ui PDF link annotation

  • http://austral-immo.com/userfiles/files/97147887721.pdfIn PDF document text
  • http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/sawodi.pdfIn PDF document text
  • http://immobilieninvestors.com/userfiles/file/48259257438.pdfIn PDF document text
  • http://alpinist.store/sribati/editor/uploadfiles/jutezekes.pdfIn PDF document text
  • http://diagcorlifescience.com/attachment/file/41023300103.pdfIn PDF document text
  • https://thefertilizergranulators.com/d/files/40950557880.pdfIn PDF document text
  • http://www.szphotar.com/admin/img/files/kimodikepetagutizeke.pdfIn PDF document text
  • http://ambulatorioveterinarioilprato.eu/userfiles/files/92174477057.pdfIn PDF document text
  • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/51bedc23b1d3e65d36c99e9c021bf997/ruxosapavug.pdfIn PDF document text
  • http://thietbimaugiao.vn/Images_upload/files/90751337045.pdfIn PDF document text
  • http://cgl.lu/userfiles/files/61067783959.pdfIn PDF document text
  • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3341541b1---widakanapiparadizufuduxul.pdfIn PDF document text
  • http://thessalonikiflights.com/files/files/sinokonovabakapemaz.pdfIn PDF document text
  • http://nattuvaartha.com/assets/ckfinder/core/connector/php/uploads/files/tijiwobuwegeke.pdfIn PDF document text
  • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/48nac53k22oj1q6528ph3h55te/mirekopitewip.pdfIn PDF document text
  • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/2gjidaae6ll2bq61n156vkj8hp/zexifowoxalojose.pdfIn PDF document text
  • https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/72912634436.pdfIn PDF document text
  • http://sun-marche.com/app/webroot/js/ckfinder/userfiles/files/wutokedulamug.pdfIn PDF document text
  • https://www.vpn-solutions.com.pe/ckfinder/userfiles/files/pegabagoronufomute.pdfIn PDF document text
  • https://piataafacerilor.ro/app/webroot/files/userfiles/files/peweg.pdfIn PDF document text
  • http://alacarte-husum.de/userfiles/file/14927344967.pdfIn PDF document text
  • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613dbfc829f4c---96180159110.pdfIn PDF document text
  • https://h16hr15k-h19hr37urn.com/contents/files/zisejujaroxepabubu.pdfIn PDF document text
  • http://kco.su/userfiles/file/60625919761.pdfIn PDF document text
  • http://xatrbio.com/userfiles/file/pomukovolo.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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