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
• 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.
• 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://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16133624b4eb12---70213711885.pdf In PDF document text

  • http://ebsenglish.net/_UploadFile/Images/file/35271080363.pdfIn PDF document text
  • https://www.hotelrestaurantmacarena.fr/ckfinder/userfiles/files/85763328880.pdfIn PDF document text
  • https://centaur.vri.cz/docs/files/jafetevi.pdfIn PDF document text
  • http://jcpingie.be/public/files/9888189189.pdfIn PDF document text
  • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/c99b46658f2376adccdc14857494935b/42175443850.pdfIn PDF document text
  • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/7873e22524ed3df78fb53c907fa9c631/rageki.pdfIn PDF document text
  • https://alirezamirmohammadi.com/images/upload/files/58593839558.pdfIn PDF document text
  • https://globalybm.com/ckfinder/userfiles/files/1631300287.pdfIn PDF document text
  • http://cowmoo.org/ckfinder/userfiles/files/88904535866.pdfIn PDF document text
  • https://eol.org.pe/ckfinder/userfiles/files/bedudokejo.pdfIn PDF document text
  • http://movediary.com/userfiles/file/naxuvikosadulatine.pdfIn PDF document text
  • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161368baf5911f---51910249249.pdfIn PDF document text
  • https://machnhaduong.com/images/uploads/files/jupawejenezibarasegosifew.pdfIn PDF document text
  • https://heart-calligraphy.com/uploads/files/202109070737434631.pdfIn PDF document text
  • https://ou-ravda.com/ckfinder/userfiles/files/517445721.pdfIn PDF document text
  • http://angel-conference.org/upload_fck/file/2021-9-16/20210916220206669053.pdfIn PDF document text
  • http://zhouzhuanx.com/v15/Upload/file/2021915156344635.pdfIn PDF document text
  • http://prefinancovaniehypoteky.sk/res/file/xijegabevabibogudezezif.pdfIn PDF document text
  • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/161450fa2d1eab---12482484639.pdfIn PDF document text
  • http://aibasylhet.edu.bd/app/webroot/ckfinder/userfiles/files/vafalugewetanemozeta.pdfIn PDF document text
  • http://chonburi33.com/userfiles/file/rovabejuwob.pdfIn PDF document text
  • https://rowsontw.com/shopadmin/upload/files/sitevururubojurafubenu.pdfIn PDF document text
  • https://maintogelonline.bet/contents/files/parukojok.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=shortcut+to+clear+chrome+cachePDF link annotation
  • 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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