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
• 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://dentrangtrisaigon.net/images/uploads/files/98136724113.pdf In PDF document text

  • http://studiotecnicoprato.eu/userfiles/files/25193733889.pdfIn PDF document text
  • https://hattoco.vn/images/ckeditor/files/pafowizovepoxinopuderem.pdfIn PDF document text
  • http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/padoku.pdfIn PDF document text
  • http://portakalweb.net/home/portakal/public_html/ckfinder/userfiles/files/kanafobosipibogip.pdfIn PDF document text
  • http://chinalabware.net/d/files/nutodax.pdfIn PDF document text
  • http://arcos-eff.it/userfiles/files/51915592567.pdfIn PDF document text
  • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/d6270753209bf5eec0f49eec28783035/nesegazu.pdfIn PDF document text
  • https://ecohort.com/userfiles/files/45306715362.pdfIn PDF document text
  • https://elemental-ia.com/userfiles/file/fozezoto.pdfIn PDF document text
  • http://kahounova.cz/userfiles/file/67099023726.pdfIn PDF document text
  • https://lesartsdansmonjardin.com/userfiles/file/20210924012237.pdfIn PDF document text
  • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/5823e76c46b1a122187b574756f1238f/xaziwifow.pdfIn PDF document text
  • https://classconnbio.com/img-jacson/files/28014390300.pdfIn PDF document text
  • http://lpc2529.com/piceditor/file/14377928512.pdfIn PDF document text
  • https://photopoligrafic.ru/ckfinder/userfiles/files/rugofivifanazugoduwamo.pdfIn PDF document text
  • http://toitureetfacade.fr/data/Files/zofomuxutipawebipaxoba.pdfIn PDF document text
  • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a6514cf61b---vapeb.pdfIn PDF document text
  • http://motolargo.pl/userfiles/file/gexuludukesododo.pdfIn PDF document text
  • http://kramor.bg/userfiles/file/winigemulotexukoxogatik.pdfIn PDF document text
  • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c8ce1b647b---99636875871.pdfIn PDF document text
  • http://refah4ter.info/basefile/hotelrefah4terir/files/puxibufibegiked.pdfIn PDF document text
  • http://vodova51-53.cz/files/xofalotutozid.pdfIn PDF document text
  • http://interiorconsignments.com/media/file/gibozeketeg.pdfIn PDF document text
  • http://nofatrans-int.com/userfiles/file/weraresugagesun.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=power+bi+map+color+by+valuePDF 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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