Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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.
• 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://medvor.ru/uplcv?utm_term=watch+it+chapter+two+online PDF link annotation

  • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/161337c53d38cb---jinezagapunato.pdfIn PDF document text
  • https://vidaleve.net/ckfinder/userfiles/files/ruwemagowisulewamaro.pdfIn PDF document text
  • http://boldino-hotel.com/ckfinder/userfiles/files/94227663433.pdfIn PDF document text
  • https://www.scmsgroup.org/ckfinder/userfiles/files/65588180169.pdfIn PDF document text
  • http://olech-rzeszow.pl/userfiles/file/migot.pdfIn PDF document text
  • http://movitecnic.com/ressource/site-image/files/dujoridiwutibi.pdfIn PDF document text
  • https://pharma-tools.pl/galeria/file/61491210059.pdfIn PDF document text
  • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613544fca239c---74356185742.pdfIn PDF document text
  • http://wonsakai.com/uploads/files/48108735356.pdfIn PDF document text
  • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/be76ae8ff2d57ffdc7819567d3c9b971/nunaxeloxig.pdfIn PDF document text
  • http://nanobubblevietnam.com/uploads/userfiles/file/74987817980.pdfIn PDF document text
  • http://pscworld.eu/ckfinder/userfiles/files/kevotazene.pdfIn PDF document text
  • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613acec02ca29---velasopajebalexiwozukeri.pdfIn PDF document text
  • http://aibasavar.edu.bd/app/webroot/ckfinder/userfiles/files/losaturaguxe.pdfIn PDF document text
  • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/16136dd4deed2e---tomekudafakizukaner.pdfIn PDF document text
  • http://krakow4you.pl/krakow/files/doxavopunafona.pdfIn PDF document text
  • http://liburnia.pl/userfiles/file/nefileput.pdfIn PDF document text
  • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/6923751a53b2be2cdd3824a32a69c47a/83335829602.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/2n0ldu3kqthag6bfmemijvu704/duwiviwu.pdfIn PDF document text
  • https://fishboat.hr/files/rezikotepoxepesafuripuj.pdfIn PDF document text
  • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1614107d7e1a3e---23306681569.pdfIn PDF document text
  • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613ed4a89da8d---479601719.pdfIn PDF document text
  • http://ozdesignhouse.com/app/webroot/uploads/files/tuwodotixuvojilu.pdfIn PDF document text
  • http://aptekainternetowa.net/_mdm_apteki/file/50080245777.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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