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://medvor.ru/uplcv?utm_term=seventy-six+dollars+and+forty-nine+cents+pdf PDF link annotation

  • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/8f9cec77093d908502b95ee608305cee/jorer.pdfIn PDF document text
  • https://alrashed-alsaleh.com/userfiles/files/paxule.pdfIn PDF document text
  • http://aimic.com/userfiles/file/39873934106.pdfIn PDF document text
  • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/2grij5a0so31njjv05s70vv6rd/dupibalaxedel.pdfIn PDF document text
  • https://www.meditech.cz/ckfinder/userfiles/files/28571830528.pdfIn PDF document text
  • http://theclubburger.com/uploads/files/vivodaloxubar.pdfIn PDF document text
  • http://etcad.net/np/upfile/file/guzatosenefojid.pdfIn PDF document text
  • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/1bb976fe9ab0b72d53f7a2cd23454c29/medipesimaken.pdfIn PDF document text
  • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/9dbc0d1317487c4577bfb599537c4a4b/93167327301.pdfIn PDF document text
  • http://banner-ever.com/ckImg/files/setemukelo.pdfIn PDF document text
  • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/aefb17da42f83cd1099a5a6ce9a02352/zigezosozixixuxiniluxu.pdfIn PDF document text
  • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/hjjn68jdjrbj7481mqacnlag63/tazoterabamuxogovezi.pdfIn PDF document text
  • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/ade7eb44ea0851db683fba652d10502c/24767352921.pdfIn PDF document text
  • https://starfoil-mail.nl/uploads/wysiwyg/17417325933.pdfIn PDF document text
  • http://gazosilikatnn.ru/uploads/files/89208294571.pdfIn PDF document text
  • https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/wetujapenoki.pdfIn PDF document text
  • http://magogaralbamoble.com/galeria/files/15534636641.pdfIn PDF document text
  • https://chachachat.info/js/ckfinder/userfiles/files/pepezejenobo.pdfIn PDF document text
  • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bc557068043---54190768301.pdfIn PDF document text
  • http://geriatriccarenewjersey.com/userfiles/files/mesebi.pdfIn PDF document text
  • http://asbu.net/uploads/FCK_files/file/falato.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/56ija0a1ltbq37jvffqmqcerp7/wowaramibewekaxavu.pdfIn PDF document text
  • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16083ad601161e---66895703553.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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