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 http://thaihotelsale.com/FileData/ckfinder/files/20210622_5CD48AA84A700259.pdf In PDF document text

  • http://robalton.es/Albums/images/file///91083116966.pdfIn PDF document text
  • http://ambulatorioveterinariosismondi.eu/file/60533463863.pdfIn PDF document text
  • http://alrabbancapital.com/file/files/gofoburupovevuz.pdfIn PDF document text
  • https://motelandratecuci.ro/userfiles/file/lopizomo.pdfIn PDF document text
  • http://hamdard.com/hamdard/app/webroot/img/ckfinder/userfiles/files/75523778967.pdfIn PDF document text
  • https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/a52016c7b541e02c86b5f91adb535d4b/jipol.pdfIn PDF document text
  • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160df80b6c4173---3990147888.pdfIn PDF document text
  • http://dexgerm.com/data/file/userfiles/files/50346969551.pdfIn PDF document text
  • http://xn--e42bt3l.net/upfile/files/25280021051.pdfIn PDF document text
  • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/fce36e224015af10ea8ab7b19efd71c5/50420684954.pdfIn PDF document text
  • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d46ad2cfd3---risirujisewowerof.pdfIn PDF document text
  • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160cd739492c8d---14608195266.pdfIn PDF document text
  • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/8570f8569a09f0584871567e95ecd6b5/6375352224.pdfIn PDF document text
  • https://tefen67.com/userfiles/files/93927236677.pdfIn PDF document text
  • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/2um5v8khffntq1kibceqhsau2e/45656629059.pdfIn PDF document text
  • http://zetrade.cz/userfiles/file/4637410433.pdfIn PDF document text
  • http://tns-china.cn/editor_upload_image/file/98961041764.pdfIn PDF document text
  • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec9f5ba04d---70858561679.pdfIn PDF document text
  • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d931effe9---92063327489.pdfIn PDF document text
  • http://noospc.ru/SITE/files/editor/file/41024906996.pdfIn PDF document text
  • https://olterus.com/contents//files/zufususefuworemugovufok.pdfIn PDF document text
  • http://braghieriarchitettura.com/userfiles/files/jemazevatisusomidaxorer.pdfIn PDF document text
  • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5a534fbbf---gabolopopalu.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=toray+membrane+catalogue+pdfPDF 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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