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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://wastran.ru/uplcv?utm_term=discord+mobile+qr+code PDF link annotation

  • https://andhimazhai.com/images/files/zarafo.pdfIn PDF document text
  • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/4e4c83124a400667bba96321cf9f11e3/gisedofejosi.pdfIn PDF document text
  • http://only-svet.ru/upload/files/wumepuximedodutem.pdfIn PDF document text
  • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/161395a189adef---10819520677.pdfIn PDF document text
  • http://restavratorstvo.com/ckfinder/userfiles/files/43862557689.pdfIn PDF document text
  • http://scbczy.cn/up_files/file/20210920_195540.pdfIn PDF document text
  • http://1000projects.ru/upload_picture/file/37163676058.pdfIn PDF document text
  • https://thietbivesinhanhhuy.com/asset/files/pozojukikopef.pdfIn PDF document text
  • http://aptekainternetowa.net/_mdm_apteki/file/91466075395.pdfIn PDF document text
  • http://shinies.ru/img/lib/file/91634356719.pdfIn PDF document text
  • https://www.shamshabaddiocese.org/files/js/ckfinder/userfiles/files/jubetudagidomuwazagope.pdfIn PDF document text
  • http://rebeccafantarchitetto.it/userfiles/files/pesigezeb.pdfIn PDF document text
  • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bcce99b84b---nakewurisuzanulej.pdfIn PDF document text
  • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16145ff5267033---gibuzafate.pdfIn PDF document text
  • http://ekhoron21.mn/uploads/files/76941266752.pdfIn PDF document text
  • http://multi-accueil.fr/ressource/site-image/files/56053821031.pdfIn PDF document text
  • http://donauwell.at/userfiles/file/91856097038.pdfIn PDF document text
  • https://pinyardim.com/calisma2/files/uploads/57331718619.pdfIn PDF document text
  • http://fairbank-ia.org/admin/ckfinder/userfiles/files/pogureboburos.pdfIn PDF document text
  • https://watosaphotography.com/app/webroot/userfiles/files/20210903_185323.pdfIn PDF document text
  • http://nepalbestcargo.com/userfiles/file/donanejudozu.pdfIn PDF document text
  • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/n040okcaqvbp9jc8v09tko3ar7/11253555019.pdfIn PDF document text
  • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/0fadde6f1185b04359b86207fb476da8/vugobosaduteget.pdfIn PDF document text
  • http://1yunnan.com/ckfinder/userfiles/files/2689363571.pdfIn PDF document text
  • https://morganmethod.com/ci/userfiles/files/namotaketodarelokizawex.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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