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://coretry.ru/uplcv?utm_term=minecraft+apk+app+not+installed PDF link annotation

  • http://korealabels.com/ckfinder/userfiles/files/rivebesaritunivudad.pdfIn PDF document text
  • http://afslab.asia/upload/files/numeto.pdfIn PDF document text
  • http://kondicionery-dzerzhinskij.ru/upload_picture/file/jorufejofatazalunom.pdfIn PDF document text
  • http://www.idukkidiocese.org/files/js/ckfinder/userfiles/files/wuwererajodeturozuv.pdfIn PDF document text
  • http://villa-carlshorst.de/sites/default/files/file/34320379743.pdfIn PDF document text
  • http://sakem.org/userfiles/files/48008457049.pdfIn PDF document text
  • http://myphamso1.net/uploads/files/sopejafanoname.pdfIn PDF document text
  • http://thegioicamdo.com/upload/files/loxetokaraxitavurukudi.pdfIn PDF document text
  • https://lescourailleurs.com/upload/editor/file/68174756164.pdfIn PDF document text
  • http://melly-incendie.fr/img_db/20995420589.pdfIn PDF document text
  • http://dieta-plus.pl/userfiles/file/56136623009.pdfIn PDF document text
  • http://sklenicky-obchod.cz/web/admin/fckeditor/userfiles/file/34533354554.pdfIn PDF document text
  • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161393ac089345---vezavekupebax.pdfIn PDF document text
  • http://sdds.be/userfiles/file/wijitiruner.pdfIn PDF document text
  • http://khlongtoei-nfe.com/library/userfiles/file/97797766452.pdfIn PDF document text
  • https://doluhosting.com/calisma2/files/uploads/luxabijowojeruremeje.pdfIn PDF document text
  • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/0fe7e88a54db210c935cc90a207d4d3e/dibeja.pdfIn PDF document text
  • https://byocamacho.com/ckfinder/userfiles/files/xevawolatodukuxen.pdfIn PDF document text
  • http://autavrabek.cz/obrazky/file/18648525627.pdfIn PDF document text
  • http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/jukenazamajoto.pdfIn PDF document text
  • http://coquicart.com/ckeditor/ckfinder/core/connector/php/uploads/files/89697868775.pdfIn PDF document text
  • http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/96783789791.pdfIn PDF document text
  • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a94faa5aa1---33344283077.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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