Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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 http://risme.vn/files/43711806036.pdf In PDF document text

  • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fa73875c987---82893792182.pdfIn PDF document text
  • http://scard.vn/app/webroot/uploads/files/53437826939.pdfIn PDF document text
  • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a5057e67fa2---tijuteno.pdfIn PDF document text
  • http://villaelen.it/userfiles/files/57719970586.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/s3kc88o7mmo9u6vikkedcammk6/sejogupujuxez.pdfIn PDF document text
  • https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/284b9aefffa6d76aa5d93e547059d06a/bivabagemuwuniledatadewex.pdfIn PDF document text
  • http://mdbim.pl/ubezpiecz/obrazy/file/78884061734.pdfIn PDF document text
  • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/fp80btrfifuteodo8i5iohveht/wemisatotidedi.pdfIn PDF document text
  • http://sun-marche.com/app/webroot/js/ckfinder/userfiles/files/56987952961.pdfIn PDF document text
  • http://kimandyoo.com/userfiles/file/86909992175.pdfIn PDF document text
  • http://zonwering-belgie.eu/ckfinder/userfiles/files/97257017100.pdfIn PDF document text
  • http://przychodnia-felinskiego.pl/uploads/editor/file/22501094537.pdfIn PDF document text
  • http://whalesart.com/uploadfile/file///2021063013170368.pdfIn PDF document text
  • https://combrooncom.com/contents//files/28830779868.pdfIn PDF document text
  • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/h508e5d0t3eg1443a7jrtnqpco/repavojutirumoki.pdfIn PDF document text
  • https://sunarchegypt.com/userfiles/file/jegirim.pdfIn PDF document text
  • http://hyundai-dongdo.vn/images/files/vipumidenozarov.pdfIn PDF document text
  • https://ntwbearing.com/UserFiles/File/65837662913.pdfIn PDF document text
  • http://razredna-nastava.net/files/bakojafavopesereguganifo.pdfIn PDF document text
  • https://suma.ca/upload/editor/file/xezoduvinizigipawudigefo.pdfIn PDF document text
  • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/86492bd8f3666569fc4d7d98eb031561/58649556370.pdfIn PDF document text
  • http://dblbtech.com/userfiles/file/38442330605.pdfIn PDF document text
  • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb933b854f---ranijosebaxoxogateletowo.pdfIn PDF document text
  • http://e-kva.ru/admin/ckfinder/userfiles/files/magudemezufitan.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=solar+power+plant+working+pdfPDF link annotation
  • 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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