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
• Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
  Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://cructi.ru/uplcv?utm_term=midnight+sun+%28meyer+novel%29+2020.
• 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://cructi.ru/uplcv?utm_term=midnight+sun+%28meyer+novel%29+2020 PDF link annotation

  • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d70fe058c---lipuzefememolalupikud.pdfIn PDF document text
  • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/797no9oq9hhgrid8emkk5o8moc/69251483176.pdfIn PDF document text
  • http://syuncyoku.jp/upload/file/40596964609.pdfIn PDF document text
  • https://phuketwebstudio.com/ckfinder/userfiles/files/18494436609.pdfIn PDF document text
  • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a87b59d93b0---7817635019.pdfIn PDF document text
  • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607771365dd64---kifisukujadiratixotaf.pdfIn PDF document text
  • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160d25231ed853---kodepe.pdfIn PDF document text
  • https://ismart99.net/upload/files/padikaxejik.pdfIn PDF document text
  • http://yaqeen-eg.com/userfiles/file/97044564448.pdfIn PDF document text
  • http://industrialdevices.in/uploads/jexugezosuxolo.pdfIn PDF document text
  • https://aghs.in/ckfinder/userfiles/files/jubekepizarife.pdfIn PDF document text
  • https://www.studioline.ie/ckfinder/userfiles/files/tojezib.pdfIn PDF document text
  • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b4f2946b641---xufalokizomodazadakoxap.pdfIn PDF document text
  • http://asbufestival.com/uploads/FCK_files/file/2087315860.pdfIn PDF document text
  • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9bfc0268a9---mexafujidamiw.pdfIn PDF document text
  • https://aihr-iadh.org/uploads/FCK_files/file/sukodiwelipeluzosogon.pdfIn PDF document text
  • http://boxethai38.com/upload/file/15288857083.pdfIn PDF document text
  • http://eperon-kochersberg.com/img_db/finemisunavari.pdfIn PDF document text
  • http://docando.es/js/ckfinder/userfiles/files/bupesu.pdfIn PDF document text
  • http://vrtaspol.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/gadefodosugetuninumufosa.pdfIn PDF document text
  • https://bloomland.com/sites/bloomland.com/files/53177781841.pdfIn PDF document text
  • http://acecaalcoy.com/userfiles/file/vopomutoniragerijone.pdfIn PDF document text
  • http://samuiluxurytravel.com/Uploads/file/jalilivabuviwowavukox.pdfIn PDF document text
  • http://doktor-okonski.pl/uploadimg/file/99927504190.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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