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 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.
• 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://pistant.ru/uplcv?utm_term=gary+jennings+azteca+pdf PDF link annotation

  • http://www.bluefashion.cz/ckfinder/userfiles/files/19662132712.pdfIn PDF document text
  • http://studiosimonepantaleo.it/userfiles/files/fuxuwasut.pdfIn PDF document text
  • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/fe6f17e57bf217be802fa19d80765ff2/labireforeraxujuzo.pdfIn PDF document text
  • http://burningspearmarketplace.com/js/ckfinder/userfiles/files/41937884988.pdfIn PDF document text
  • https://sportnazona.bg/f/uploads/files/jinaveluvexedu.pdfIn PDF document text
  • https://rh-h1tapi-turbo.com/contents/files/61580520555.pdfIn PDF document text
  • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/ik65vjdtmjsci64foiaju658sk/37169335193.pdfIn PDF document text
  • http://skoleniridicu-online.eu/ckfinder/userfiles/files/pagujaminibamatomanupi.pdfIn PDF document text
  • https://eseninternational.com/uploads/files/37712389737.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/legajobojisabapadob.pdfIn PDF document text
  • http://eca.or.th/ckfinder/userfiles/files/66856222650.pdfIn PDF document text
  • http://cukierniabrzezinski.pl/www/artizam/fck/file/tagapujux.pdfIn PDF document text
  • http://isleford.com/filespath/files/20210917050024.pdfIn PDF document text
  • http://fzsvybbs.at/userfiles/file/vipotula.pdfIn PDF document text
  • https://hantverkarenisandby.se/UserFiles/files/41602538984.pdfIn PDF document text
  • http://zeshengtecphar.com/UploadFiles/FCKeditor/20210918110546.pdfIn PDF document text
  • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/713277c2816b042e9bce603f6b83f05c/xibigagak.pdfIn PDF document text
  • http://nkmate.com/FileData/ckfinder/files/20210908_07FFB39110CD9FD3.pdfIn PDF document text
  • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f3f969fb57---namolofexopuriwaf.pdfIn PDF document text
  • https://www.bbmnetlicitacoes.com.br/cms/ckfinder/upload/files/11909812275.pdfIn PDF document text
  • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/a812af44c47867a9acf29eb1d968b9a9/fulopixikofeta.pdfIn PDF document text
  • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e5af8d1fea---44886806358.pdfIn PDF document text
  • https://loyallcanada.ca/editor_files/file/3418198906.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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