Malicious PDF — malware analysis report

Heuristics 9

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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=icd+10+practice+questions+and+answers+pdf PDF link annotation

  • http://hzaidele.com/images/upload/File/66070698515.pdfIn PDF document text
  • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613850ad86da5---72833467412.pdfIn PDF document text
  • https://brillimet.com/uploads/files/202108311705278597.pdfIn PDF document text
  • http://mebelhotel.ru/userfiles/files/zaxugutasal.pdfIn PDF document text
  • https://www.lipca.com/ckfinder/userfiles/files/kulop.pdfIn PDF document text
  • http://aiswaryamatrimonials.com/fck_uploads/file/30184745443.pdfIn PDF document text
  • https://redac.ch/upload/37395478581.pdfIn PDF document text
  • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/943356ac45385e5049e395b390090b6b/30503442975.pdfIn PDF document text
  • http://sl-light.ru/design/img/upload/file/puzubiduximesuwofamowar.pdfIn PDF document text
  • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1a50498b0---firarekij.pdfIn PDF document text
  • http://zekejozsef.eu/FCKfeltoltott/file/97841617776.pdfIn PDF document text
  • http://posicert.com/upload_fck/file/2021-9-4/20210904210404387620.pdfIn PDF document text
  • http://xn----7sbab1bcaqplb0ccyi9d.xn--p1ai/files/file/tajafoxesopijoti.pdfIn PDF document text
  • https://nada70.org/userfiles/file/pefoburinogokosinup.pdfIn PDF document text
  • https://xn--bankkrtya-41a.hu/js/ckfinder/userfiles/files/84271401622.pdfIn PDF document text
  • http://abcbyspu.net/ckfinder/images_store/files/boruweba.pdfIn PDF document text
  • https://honghow.com/ckfinder/userfiles/files/vavedowurogexosa.pdfIn PDF document text
  • http://www.zywawiara.pl/pliki/telaje.pdfIn PDF document text
  • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613734a2f14e3---18078653863.pdfIn PDF document text
  • http://ufnk.fr/app/webroot/files/file/najudexusuvogimisesabezef.pdfIn PDF document text
  • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613aab03b4b31---dakojekujetodominerelex.pdfIn PDF document text
  • https://hrmconsulting.biz/upload/files/burajugupaxurogazi.pdfIn PDF document text
  • http://plusk-car.com/js/upload/files/viroxog.pdfIn PDF document text
  • http://kutscher-customs.de/gfx/userfiles/files/nosizupumatuze.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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