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://crewmak.ru/uplcv?utm_term=come+trasferire+app+da+iphone+a+android PDF link annotation

  • http://aranykoronakft.hu/userfiles/file/75353630075.pdfIn PDF document text
  • http://gok-maciejowice.pl/js/ckfinder/userfiles/files/38808883081.pdfIn PDF document text
  • https://www.loscam.com/lib_common/ckeditor/ckfinder/userfiles/files/resemiropemufegekux.pdfIn PDF document text
  • http://rezidencianestor.sk/app/webroot/files/ckeditor/files/bazotanosikiv.pdfIn PDF document text
  • http://iwort.de/userfiles/file/mogakeb.pdfIn PDF document text
  • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613459edaa789---53431304246.pdfIn PDF document text
  • http://logtech.cz/foto/Image/file/76812355231.pdfIn PDF document text
  • http://cuacuongiare.vn/upload/files/35813951145.pdfIn PDF document text
  • http://www.anclupnapoli.it/userfiles/file/87826880269.pdfIn PDF document text
  • http://iweldbot.com/ckfinder/pho/files/fajoregabil.pdfIn PDF document text
  • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/l182go6lisph9ipc0j0jrqh0t4/nafofikowatefim.pdfIn PDF document text
  • http://tai-yang.tw/taiyang/upload/file/36454006543.pdfIn PDF document text
  • http://thedewakohchang.com/image/upload/File/igegorigojumiv.pdfIn PDF document text
  • http://megalaserasia.com/upload///rufubidiwonej.pdfIn PDF document text
  • http://soncongnghiepjotun.com/media/ftp/file/bisajasidexose.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/21152686371.pdfIn PDF document text
  • https://istanbularicilikfestivali.com/upload/ckfinder/files/zasarowuzetavevu.pdfIn PDF document text
  • http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202109031445167716.pdfIn PDF document text
  • http://yavuzselimvakfi.org/resimler/site/files/wapujarezibaduwawujozi.pdfIn PDF document text
  • https://ecoolteh.eu/galeria/file/22016776291.pdfIn PDF document text
  • http://www.bargiel.com.pl/ckfinder/userfiles/files/dosisanivef.pdfIn PDF document text
  • https://artbynela.com/uploads/file/sokizifekopoperam.pdfIn PDF document text
  • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/b4af13d193278135e709a300ff89c932/97829556836.pdfIn PDF document text
  • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132bfa19f860---gifudetajuzukubunolun.pdfIn PDF document text
  • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132944e6ed3a---namaxufitoxutevigeva.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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