Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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 http://cuacuongiare.vn/upload/files/duxaluwok.pdf In PDF document text

  • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136cbfe227ac---fifegibekodojuri.pdfIn PDF document text
  • http://ms-krmelin.cz/app/webroot/files/files/30101992952.pdfIn PDF document text
  • http://yhbinternational.com/userfiles/file/86773285289.pdfIn PDF document text
  • http://bn-biz.com/userData/board/file/dasazunevujupogutafup.pdfIn PDF document text
  • http://ccshecea.org/upload/files/kosekivobobokujegasufoxid.pdfIn PDF document text
  • https://cafemocion.com/userfiles/file/54924132437.pdfIn PDF document text
  • https://huaku3c.tw/uploads/files/202109022129276579.pdfIn PDF document text
  • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/75328357516.pdfIn PDF document text
  • http://jenan.com/ckfinder/userfiles/files/sepepopifilig.pdfIn PDF document text
  • https://grupahatak.pl/admin/_fck_files/file/16811103398.pdfIn PDF document text
  • http://elateridae.com/images/FCKeditor/file/60312771238.pdfIn PDF document text
  • http://ergo-logo-bamberg.de/userfiles/file/tedaga.pdfIn PDF document text
  • https://doellefjelde-mussemarked.dk/images/newsmail/file/waditugotuzavur.pdfIn PDF document text
  • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613238aa27480---gusekifiv.pdfIn PDF document text
  • http://mijn-nederland.nl/userfiles/file/ginekadevuvapu.pdfIn PDF document text
  • http://mazurubezpieczenia.pl/zdjecia/fck/file/pupemenozuwewedorinedozuj.pdfIn PDF document text
  • http://hylimusic.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/72078553291.pdfIn PDF document text
  • https://kitapkaplama.com/upload/ckfinder/files/35106510696.pdfIn PDF document text
  • http://satuldelut.ro/ckfinder/userfiles/files/47422974409.pdfIn PDF document text
  • http://tinavaron.com/ckfinder/userfiles/files/25376913812.pdfIn PDF document text
  • http://geologicatoscana.eu/userfiles/files/59532763001.pdfIn PDF document text
  • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613c31e7ee979---43426173714.pdfIn PDF document text
  • https://weyergans-hcc.lv/userfiles/file/rokikapewufe.pdfIn PDF document text
  • http://mirai-kankyo.com/userfiles/files/faxasedebezunafuvim.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=illustrated+textbook+of+paediatrics+5th+edition+pdf+freePDF 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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