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://infrive.ru/uplcv?utm_term=google+adsense+tutorial+pdf PDF link annotation

  • http://101balkon.ru/upload/files/53664735307.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/goxuwanazedox.pdfIn PDF document text
  • https://liniagdanskzydowo.pl/files/lokozeduxisupololu.pdfIn PDF document text
  • https://alsterparkett.de/wp-content/plugins/super-forms/uploads/php/files/34t079mssqq0vlmi4kcatjhj6o/22885872085.pdfIn PDF document text
  • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/4e9e6ab9981bf2419f8a4ce7a4eff104/71290861917.pdfIn PDF document text
  • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e58c9406759---6148068967.pdfIn PDF document text
  • http://7linc.com/uploadfiles/fckeditor/20210725/file/16271523349745.pdfIn PDF document text
  • http://malifer.hu/upload/file/dajapufewis.pdfIn PDF document text
  • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608492fc77c23---pubek.pdfIn PDF document text
  • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16086d8011d163---4979275118.pdfIn PDF document text
  • http://sonkertrail.org/clients/9/92/9260a3c387aed4615f72c72c3a1da295/File/41347963230.pdfIn PDF document text
  • http://vina2002.com/uploads/files/43169966340.pdfIn PDF document text
  • http://cooperclassof1970.com/clients/9656/File/zevujoradeserepa.pdfIn PDF document text
  • http://kangs78.com/clients/66216/File/popugalebanazolusa.pdfIn PDF document text
  • https://bunianco.com/other_files/File/tavidatopumoponuni.pdfIn PDF document text
  • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/4bl3upqt6ai2rc81r61f8koffu/kifigajonavurij.pdfIn PDF document text
  • http://chiaranannini.com/userfiles/files/kukelewupafekaxivera.pdfIn PDF document text
  • http://www.allatpatikapecs.hu/images/file/62496869521.pdfIn PDF document text
  • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e8a4864abb---79509953605.pdfIn PDF document text
  • https://afayl.com/userfiles/file/zomejabalamop.pdfIn PDF document text
  • http://qkmedica.com/uploads/userfiles/file/bakux.pdfIn PDF document text
  • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba994e3e692---zivojomuxadutudewagopepuw.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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