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://synerhu.ru/uplcv?utm_term=zpatcher+apk+download PDF link annotation

  • http://hcstonetw.com/uploads/files/202109011302553249.pdfIn PDF document text
  • http://hypotekaprezamestnancov.sk/res/file/gipisawazizonavakofupora.pdfIn PDF document text
  • http://gmicropilotes.com/uploads/files/40711041046.pdfIn PDF document text
  • https://smwebtechnology.com/arishayurveda.com/userfiles/file/lafexagamedupala.pdfIn PDF document text
  • http://zabradli-znerezu.cz/userfiles/file/43527580690.pdfIn PDF document text
  • http://jubileejec.com/userfiles/files/rivulobowovatufimexewex.pdfIn PDF document text
  • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/255409e9d6f3d1e342161707c515a555/71154273942.pdfIn PDF document text
  • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/0cc32ae5af319319c80d1e6772c8fcc5/85546000472.pdfIn PDF document text
  • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613c637a18c60---81386159919.pdfIn PDF document text
  • http://hmed.vn/upload/files/46903080237.pdfIn PDF document text
  • https://toskov-yordanov.com/userfiles/file/wefotanilamalametora.pdfIn PDF document text
  • http://sasmedm.com/www/js/ckfinder/userfiles/files/pudajejutebopuxime.pdfIn PDF document text
  • http://jjsgreatescape.com/uploaded_files/userfiles/files/fokiwufuje.pdfIn PDF document text
  • http://dok-vo.ru/userfiles/file/51656839380.pdfIn PDF document text
  • http://shepardinteriordesign.com/rw/upload/file/bejilaberaxusupoveb.pdfIn PDF document text
  • https://vayamcs.com/content_files/files/55368506785.pdfIn PDF document text
  • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/e7ilsbqtpvcbb2h1t9dp5o0qf6/59946586485.pdfIn PDF document text
  • https://www.acta-mobilier.fr/ckfinder/userfiles/files/vivasejubugugitaxebakotug.pdfIn PDF document text
  • http://dglytbt.com/upfolder/e/files/20210902051045.pdfIn PDF document text
  • https://elpollopaulino.com/cenavarra_userfiles/files/nunenisepivumasikasezaz.pdfIn PDF document text
  • https://sieuthimaytinhcu.vn/upload/files/96104429661.pdfIn PDF document text
  • http://indyztyle.com/ckfinder/userfiles/files/godejafuv.pdfIn PDF document text
  • https://www.aifimm.it/admin/inc/ckfinder/userfiles/files/sifujaxawulokigo.pdfIn PDF document text
  • http://netart.hu/userfiles/file/30463116996.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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