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 https://cructi.ru/uplcv?utm_term=fifty+shades+of+grey+now+tv PDF link annotation

  • https://zoldlaptop.hu/ckfinder/userfiles/files/depiseroge.pdfIn PDF document text
  • https://candbco.com/ckfinder/userfiles/files/69583042121.pdfIn PDF document text
  • http://texinpack.com/uploadfile/file///2021092113543355.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/xuduzozixi.pdfIn PDF document text
  • https://mmagame.com/userfiles/file/34835376852.pdfIn PDF document text
  • https://marlin-shop.ru/ckfinder/userfiles/files/67713100445.pdfIn PDF document text
  • http://classiccar-jp.com/js/upload/files/51173163485.pdfIn PDF document text
  • https://termofriz.rs/files/68713585786.pdfIn PDF document text
  • http://momsystem.ru/public/file/1361580863.pdfIn PDF document text
  • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16130b0d021406---24166462711.pdfIn PDF document text
  • http://paitoonbox.com/userfiles/files/36023190966.pdfIn PDF document text
  • http://identik.hu/editor_up/noxuxafomilexer.pdfIn PDF document text
  • http://lenosada.sk/editor_uploads/files/gapubiwisirapof.pdfIn PDF document text
  • http://euroteam.vn/ckfinder/userfiles/files/muwanifuwub.pdfIn PDF document text
  • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614a24f504aa2---sewulanebosimizemojijilu.pdfIn PDF document text
  • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16140e9d749329---25248927783.pdfIn PDF document text
  • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/2a8a3d6a4817e991ce85e5325e107109/29253026683.pdfIn PDF document text
  • http://detskaoptika.cz/ckfinder/userfiles/files/71983877801.pdfIn PDF document text
  • http://saraya-shop.ru/upload/files/55785437627.pdfIn PDF document text
  • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/31f317157475e4240a69a226d709738b/93234727704.pdfIn PDF document text
  • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/3100258c0cd9057fbfd675f1b122b803/zubos.pdfIn PDF document text
  • http://kuwaited.com/cote_dor_import/admin/ckfinder/userfiles/files/bujubasibawed.pdfIn PDF document text
  • http://12shio5.com/contents/files/kowipifokaw.pdfIn PDF document text
  • https://aonetreks.com/uploads/file/55691087336.pdfIn PDF document text
  • http://fertilityupdates.com/userfiles/files/36514191492.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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