Malicious PDF — malware analysis report

Heuristics 10

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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
• MFA / one-time-code harvesting lure high SE_MFA_LURE
  Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://cructi.ru/uplcv?utm_term=forgot+pin+pattern+android PDF link annotation

  • http://greenhere.cn/upload/ckimg/files/202109080209137384.pdfIn PDF document text
  • https://propiedades.net/ckfinder/userfiles/files/74605238856.pdfIn PDF document text
  • https://samngaimarble.com/html_upload/file/degogakexatil.pdfIn PDF document text
  • http://hotelalbicia.com/userfiles/file/63579887701.pdfIn PDF document text
  • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/b716d082a436cf449fac9a32d35c74c5/89670899607.pdfIn PDF document text
  • http://zssadkowice.pl/pliki/kurakadaba.pdfIn PDF document text
  • http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/36495737800.pdfIn PDF document text
  • https://orderpoet.com/ckfinder/userfiles/files/98774042967.pdfIn PDF document text
  • https://tatsolarlight.com/uploads/files/80349149646.pdfIn PDF document text
  • http://globalfeedindustry.com/upload/files/30052328407.pdfIn PDF document text
  • http://oldstat.ww.tj/img/file/ronebato.pdfIn PDF document text
  • http://medtravel.lv/images/hand_uploaded/files/80027555272.pdfIn PDF document text
  • https://verlauf-ekb.ru/admin/ckfinder/userfiles/files/vafibemaxomerosobizaseke.pdfIn PDF document text
  • https://costabravas.com/uploads/localidades/files/verelusovavow.pdfIn PDF document text
  • http://feuerwehrobrigheim.de/upload/files/63827797919.pdfIn PDF document text
  • https://ourcampuswindow.com/ckfinder/userfiles/files/jofixul.pdfIn PDF document text
  • http://dastone.ru/userfiles/file/vuvudeneluliremalasuta.pdfIn PDF document text
  • https://adikmanis.com/contents/files/pexijopogawuwuzavitupifem.pdfIn PDF document text
  • http://gccde.com/downloads/blog/geust/files/fobozaf.pdfIn PDF document text
  • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/67f513c73ac1658e6aca438c22355f27/fididavika.pdfIn PDF document text
  • http://szentimresiklos.hu/upload/file/mijanigugijabesefem.pdfIn PDF document text
  • http://www.iuoelocal870.com/kaizen/ckfinder/userfiles/files/15596368969.pdfIn PDF document text
  • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/161334c41a06c3---zetedolatopavijiwizano.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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