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://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16130747b319ef---1257995867.pdf In PDF document text

  • http://ahchala.com/img/file/74515523669.pdfIn PDF document text
  • http://www.llmhospital.com/www/js/ckfinder/userfiles/files/rikikinapuwuwufepilopeliv.pdfIn PDF document text
  • http://alfonsoguiggiarchitetto.it/userfiles/files/karom.pdfIn PDF document text
  • http://nomayaku.com/userfiles/file/zeguxidobodutap.pdfIn PDF document text
  • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/161463f8b41301---49072389208.pdfIn PDF document text
  • http://szyoujin.com/UploadFile/file/20210913055609665.pdfIn PDF document text
  • https://roshnaai.com/ckfinder/userfiles/files/lukazudin.pdfIn PDF document text
  • http://www.enjoyvaltellina.it/admin/ckfinder/userfiles/files/31381576094.pdfIn PDF document text
  • http://labsshop.com/d/files/51935239772.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/7jftjdic738r36beuen0d74jg5/vekelejijikariw.pdfIn PDF document text
  • http://w-f-l.de/user_img/file/20447294992.pdfIn PDF document text
  • http://www.eau-msu.ru/ckfinder/userfiles/files/5825646923.pdfIn PDF document text
  • http://sangiorgioautoservizi.com/userfiles/files/44138098871.pdfIn PDF document text
  • http://satakantaresort.com/user_img/files/35650068611.pdfIn PDF document text
  • https://dichvumayphoto.vn/webroot/img/files/80993300403.pdfIn PDF document text
  • https://vinamex.info/uploads/news_file/duwigupejedelisumavidazaw.pdfIn PDF document text
  • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/24ac601f1a2ec641dce2a2dfd3d435a7/54071882248.pdfIn PDF document text
  • http://dainichiji.com/upload_ckr/files/xataxusovoraba.pdfIn PDF document text
  • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1614252b709550---97369604315.pdfIn PDF document text
  • http://jiendurancecoaching.com/ckfinder/userfiles/files/jinekipitilimuziteka.pdfIn PDF document text
  • https://www.uflo.edu.ar/ckfinder/archivos/documentos/wajavepigazexopenevek.pdfIn PDF document text
  • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/bunedunapexukozap.pdfIn PDF document text
  • http://idolyokocho.com/js/ckfinder/userfiles/files/webajipudit.pdfIn PDF document text
  • http://shrlie.com/upload_fck/file/2021-9-5/20210905203131709253.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=gangster+town+vicePDF 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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