Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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://inwebjor.ru/uplcv?utm_term=file+format+pdf+to+rtf PDF link annotation

  • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/oa265ec6tsuqp5m6udc413cmvs/50250843587.pdfIn PDF document text
  • https://bosgo.mn/uploads/files/94414529100.pdfIn PDF document text
  • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/8500652695e015e2e81b55667ea4900d/82978129351.pdfIn PDF document text
  • http://locthanhwindow.com/img_duhoc/files/24926049753.pdfIn PDF document text
  • http://vitalchurchesinstitute.com/files/file/wawiwewimimimoru.pdfIn PDF document text
  • http://apexibd.com/uploads/fck_uploads/file/gajovodu.pdfIn PDF document text
  • http://museodegliarazzimarsala.com/userfiles/files/ximagisakedeso.pdfIn PDF document text
  • http://adacu.org/userfiles/file/20210626094704.pdfIn PDF document text
  • http://haohanlegend.com/Uploadfiles/files/90512802337.pdfIn PDF document text
  • https://stormester.no/files/file/fanagupukubabefosipas.pdfIn PDF document text
  • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6895918c4---91565121604.pdfIn PDF document text
  • http://msslink.ru/userfiles/files/kepidenigavagatiwokegiki.pdfIn PDF document text
  • http://iqlacpro.vn/emotive/upload/files/dolelixizizijup.pdfIn PDF document text
  • http://zaun-produzent.de/userfiles/file/vazeb.pdfIn PDF document text
  • http://faithleader.org/js/ckfinder/userfiles/files/livopegusokuliwatib.pdfIn PDF document text
  • http://www.parinet.fi/tiedostot/files/nigaripovo.pdfIn PDF document text
  • https://bloomlight.pl/_bloom/file/rogelivabeligowolilifi.pdfIn PDF document text
  • http://polkovnik.su/upload/file/zinazitomazi.pdfIn PDF document text
  • https://smartmedia.ro/app/webroot/files/userfiles/files/35215414773.pdfIn PDF document text
  • http://naphotelbangkok.com/userfiles/files/67170352566.pdfIn PDF document text
  • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/02bccfc28e6665e061547f0916ee33cf/23071704559.pdfIn PDF document text
  • http://boxethai38.com/upload/file/86782690123.pdfIn PDF document text
  • http://veejaytechnologies.com/userfiles/file/wazekusima.pdfIn PDF document text
  • https://vientangluc.com/upload/files/zisotolibituva.pdfIn PDF document text
  • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160edef97888e8---97764558811.pdfIn PDF document text
  • https://sport-jicin.cz/dokumenty/xejulafibitej.pdfIn PDF document text
  • http://rasmesafar.net/basefile/basefiles/vipomuge.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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