Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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://crysiq.ru/uplcv?utm_term=window+10+latest+update PDF link annotation

  • https://knurussian.kr/DATA/upload/files/202109091821348267.pdfIn PDF document text
  • https://hoalavender.net/upload/files/wogigoreg.pdfIn PDF document text
  • http://lacasedescaraibes.fr/file/90789688465.pdfIn PDF document text
  • http://progettogeometra.it/userfiles/files/fuzekasatojopod.pdfIn PDF document text
  • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/4fb48b2900c0ac9359641a35d3f89c9c/22203116119.pdfIn PDF document text
  • http://pomelieagency.com/userfiles/files/jujimuwiwogodadoworipejup.pdfIn PDF document text
  • https://www.mppoa.cloudlinesystems.com/assets/ckfinder/userfiles/files/pikigubukezeluduvus.pdfIn PDF document text
  • http://csc020.com/userfiles/file/20210908175538_g9ld0r.pdfIn PDF document text
  • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe0c4b9029---70688179357.pdfIn PDF document text
  • http://alacarte-design.de/userfiles/file/39284159313.pdfIn PDF document text
  • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/6e1e796c5f5d1adb2433afb98a11ede3/10997545987.pdfIn PDF document text
  • https://floresdeserrezuela.com/aym_image/files/gatunobo.pdfIn PDF document text
  • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613be00838619---fewusefojosixapuwuji.pdfIn PDF document text
  • http://hansungid.com/userfiles/file/xubejuwegi.pdfIn PDF document text
  • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161401096551f7---liwuxad.pdfIn PDF document text
  • https://produktybhp.pl/pliki_user/File/repevi.pdfIn PDF document text
  • http://oresteruggiero.com/userfiles/files/16601769172.pdfIn PDF document text
  • http://dtyxbpzx.com/filespath/files/20210904235800.pdfIn PDF document text
  • http://hamishehbaharcarpet.com/My_Project/Hamishe_bahar/ahar_img/files/35904410468.pdfIn PDF document text
  • https://stoneappeal.in/FCKeditor/file/poforiwuguresaduwidipoj.pdfIn PDF document text
  • http://gold-carsales.com/js/upload/files/47581617346.pdfIn PDF document text
  • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/qap9ammqv9hk6sb29v70i9khs3/27328249546.pdfIn PDF document text
  • http://www.tsahimmongol.com/uploads/images/files/xasofubevoruwemudinitel.pdfIn PDF document text
  • https://konferencii.ru/js/ckfinder/userfiles/files/17526577756.pdfIn PDF document text
  • http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/78796727184.pdfIn PDF document text
  • http://lpxs168.com/filespath/files/20210915192556.pdfIn PDF document text
  • https://wroclawmodelshow.pl/ckfinder/userfiles/files/tirogisavivuti.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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