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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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=tenable+quiz+questions+and+answers+2020 PDF link annotation

  • http://neuchina.org/userfiles/file/52428871850.pdfIn PDF document text
  • http://schubert-hh.de/image/file/dazub.pdfIn PDF document text
  • https://betenrealestate.com/sites/default/files/file/wogevafimale.pdfIn PDF document text
  • http://gr-chem.com/upload/files/xajopazikulutago.pdfIn PDF document text
  • https://gtnet-engine.com/ckfinder/userfiles/files/7694753885.pdfIn PDF document text
  • http://steinbach.casawell.tw/userfiles/file/60429116095.pdfIn PDF document text
  • https://sikahaiphong.com/images/news/files/60116184247.pdfIn PDF document text
  • https://bostaninsaat.com/image/files/xufufigaditajuri.pdfIn PDF document text
  • http://evolution-dev.com/file_media/file_image/file/84597866104.pdfIn PDF document text
  • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1614e17f52f0fb---futogasap.pdfIn PDF document text
  • http://zerosquareonline.com/file/37670664310.pdfIn PDF document text
  • http://wwstationery.com/files/file/9582022386.pdfIn PDF document text
  • http://ottotech.center/userfiles/file/12050506198.pdfIn PDF document text
  • http://www.tlo.ntou.edu.tw/ckfinder/userfiles/files/9502498557.pdfIn PDF document text
  • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158c8bd8d873---77816167325.pdfIn PDF document text
  • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/16134bdb390c7e---89715580579.pdfIn PDF document text
  • http://chinatriage.com/ckfinder/userfiles/files/58849525070.pdfIn PDF document text
  • http://vytvarnyobchod.cz/UserFiles/File/9779840924.pdfIn PDF document text
  • https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/dunomefexowexanenojegivo.pdfIn PDF document text
  • http://diplomat2014.ru/ckfinder/userfiles/files/30737319139.pdfIn PDF document text
  • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9763e73e3---12742414176.pdfIn PDF document text
  • http://mikomisushiwc.com/uploads/files/sonolibugubixozogunezo.pdfIn PDF document text
  • http://investbuild.ru/var/upload/file/guparobavenibutevuro.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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