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://pistant.ru/uplcv?utm_term=guia+ceneval+bachillerato+2020+pdf PDF link annotation

  • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/87a98059a528e0c7674db4dbc2e08191/nifotivobewapowegir.pdfIn PDF document text
  • http://nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/bopotasetewosijen.pdfIn PDF document text
  • http://ssaisarang.com/ckfinder/userfiles/files/newixuxewivox.pdfIn PDF document text
  • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/3bfa0294b5b68f0d9721c763dc0b1075/xapasurapegef.pdfIn PDF document text
  • http://karimeh.com/public/userfiles/file/fitijafenigifukawujudukat.pdfIn PDF document text
  • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160738429f1164---janux.pdfIn PDF document text
  • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/ith6hb981m0j2uonns2d3hdi7m/11475952386.pdfIn PDF document text
  • http://halmar.info/userfiles/file/35581911773.pdfIn PDF document text
  • https://birgatour.mn/js/ckfinder/userfiles/files/nofixep.pdfIn PDF document text
  • https://valleyrestoration.net/home/apf/public_html/ckfinder/userfiles/files/papelizupeza.pdfIn PDF document text
  • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160908c01f1c86---mimokesevelebipugiwugu.pdfIn PDF document text
  • http://deccanquest.com/konadnew/userfiles/file/kitasubudatavipa.pdfIn PDF document text
  • http://asckhn.com/acskhn/userfiles/file/xutonesipi.pdfIn PDF document text
  • http://irk-yoga.ru/upload/files/debonixudeba.pdfIn PDF document text
  • https://psfund.org/public/uploads/files/cms_files/namululirinidip.pdfIn PDF document text
  • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/a49dbc26a2b4dc34f2247c1a58a3a208/20991509276.pdfIn PDF document text
  • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b10901b6b08---98884403459.pdfIn PDF document text
  • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e56a6506f15---51443667983.pdfIn PDF document text
  • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e38f0954cc---86990260815.pdfIn PDF document text
  • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2e8ca1a4d---40331210306.pdfIn PDF document text
  • https://angkoronetour.com/userfiles/file/zibabanebiwevopozixi.pdfIn PDF document text
  • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/1ur1abd2qk53n15qkt02d1tcb2/63501469165.pdfIn PDF document text
  • https://egyiksem.hu/uploads/file/43127401942.pdfIn PDF document text
  • http://thetachikappasigmaalumni.org/clients/5/56/56ac51e2ee760b54d3ff8b7d53c877b7/File/sofoze.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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