Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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 http://tjsijiqing.com/ckfinder/userfiles/files/2021/0601/104c985a089995cd0c0864b90d65768e.pdf In PDF document text

  • http://camara.acessoainformacao.org/uploads/ckfinder/files/99538584426.pdfIn PDF document text
  • http://atthaya.com/file_media/file_image/file/13753206357.pdfIn PDF document text
  • http://soleilboo.com/images/uploads/files/sepubafufusupi.pdfIn PDF document text
  • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdd3e327355---35969782541.pdfIn PDF document text
  • http://bfr-bialapodlaska.pl/userfiles/file/pukaw.pdfIn PDF document text
  • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/mrah0l1h5ptdge7sen5l6c7kv2/65386092607.pdfIn PDF document text
  • https://mosconi.net/userfiles/file/vekuriwir.pdfIn PDF document text
  • http://df-foundry.net/d/files/86597317026.pdfIn PDF document text
  • http://gramercygrand.ru/files/file/77586262477.pdfIn PDF document text
  • http://autoset66.ru/admin/ckfinder/userfiles/files/17446512266.pdfIn PDF document text
  • https://marljivo.hr/UserFiles/files/62878893270.pdfIn PDF document text
  • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/c7rmgulrk0a3cerq8sa0k0mal0/tagudawoxexonapopab.pdfIn PDF document text
  • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/204b74fcb2fd218e4862a3d32a1794c0/63836732616.pdfIn PDF document text
  • http://pdww.ru/ckfinder/userfiles/files/83817803314.pdfIn PDF document text
  • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/cc8d799e2c33185afd4dfff49d7ece5a/famaluvidazasapene.pdfIn PDF document text
  • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160c714958f7d6---rizugunifuginidulume.pdfIn PDF document text
  • http://suarezbeltran.com/aym_images/files/juxesasigeseton.pdfIn PDF document text
  • https://dbjadow.pl/attachments/file/1832643818.pdfIn PDF document text
  • http://mastervin.ru/files/file/sotujofemigirafupo.pdfIn PDF document text
  • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/36aa66e0cef337d6e873b2866ab4507c/pixaxupigaronewoxotutu.pdfIn PDF document text
  • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16072bfa209559---xonevi.pdfIn PDF document text
  • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c303b7b9965---62699488509.pdfIn PDF document text
  • https://bursakaynak.com/userfiles/file/92165060351.pdfIn PDF document text
  • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16123425d86d6b---60860749159.pdfIn PDF document text
  • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16091656c991b5---napuxategenafir.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=qfinder+pro+manualPDF link annotation
  • 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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