Malicious PDF — malware analysis report

Heuristics 8

• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• 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://coretry.ru/uplcv?utm_term=widevine+content+decryption+module+-+version+0.0.0.0+status+-+component+not+updated PDF link annotation

  • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/kutikakoxev.pdfIn PDF document text
  • https://immo-cjeanpaul.lu/userfiles/files/28149968966.pdfIn PDF document text
  • https://siangyun.com/upfiles/editor/files/32138488960.pdfIn PDF document text
  • http://interreg-ipa-husrb.com/downloads/pizawewajonoji.pdfIn PDF document text
  • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/l1b76g1mm3sjb5iae2ke99rrdn/9702578027.pdfIn PDF document text
  • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/hu50i9fu7q2ptou9ie5pjoa4t9/jituxasalopiv.pdfIn PDF document text
  • http://anandtouristcorporation.com/uploads/lasideraxugaferawigirene.pdfIn PDF document text
  • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/f5b862974e2aa353d403fc3247b36a6b/50053382048.pdfIn PDF document text
  • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/c49ddd319741fc773e00da8c831a3fd9/79061614406.pdfIn PDF document text
  • http://autosvanbeek.nl/mindcms/js/ckf/userfiles/files/78098635143.pdfIn PDF document text
  • https://zakarpattya-tour.com/upload/69525909243.pdfIn PDF document text
  • http://klubalfa.org/img/userfiles/file/95168164478.pdfIn PDF document text
  • https://partnermind.cz/images/files/84590648476.pdfIn PDF document text
  • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/248df7ae214acb314253f9e40aabee96/gupimuz.pdfIn PDF document text
  • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e943fb3fe3c---jezebawotubena.pdfIn PDF document text
  • http://autavrabek.cz/obrazky/file/6633327023.pdfIn PDF document text
  • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c806d39a29---10926407512.pdfIn PDF document text
  • https://gachbinhduong.com/upload/file/99196045234.pdfIn PDF document text
  • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5a93593cd6---70868239093.pdfIn PDF document text
  • https://ilexgold.com/app/webroot/files/userfiles/files/jimisunu.pdfIn PDF document text
  • http://carefirstwalkathon.com/clients/8/89/89514deb4c0e8807eb046cac28c4977f/File/40653891468.pdfIn PDF document text
  • http://koreanhotpot.com/uploads/files/66476878283.pdfIn PDF document text
  • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/a96d1o8mo660kfg94unavenna0/69862493589.pdfIn PDF document text
  • https://ilexgold.com/app/webroot/files/userfiles/files/rogowubo.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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