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://crewmak.ru/uplcv?utm_term=4+letter+words+starting+with+b PDF link annotation

  • http://szyqjsj.com/UploadFile/file/20210901220111712.pdfIn PDF document text
  • http://guowangcable.com/d/files/95819587993.pdfIn PDF document text
  • https://ahl2005.com/ckfinder/userfiles/files/guvaxajufufovelamusaxem.pdfIn PDF document text
  • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613630e00b623---61967361869.pdfIn PDF document text
  • http://elitaliaweb.it/upload/file/notepotaz.pdfIn PDF document text
  • http://zeci.nl/im/image/fulijonapidofuvuzinirad.pdfIn PDF document text
  • https://smobiil.eu/userfiles/files/16876138868.pdfIn PDF document text
  • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16137837e4a5e9---82847784831.pdfIn PDF document text
  • http://quiltingacademy.info/fckeditor/userfiles/file/11351208671.pdfIn PDF document text
  • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/16130c911da304---27663819930.pdfIn PDF document text
  • https://birutelorasin.com/contents/files/218987212.pdfIn PDF document text
  • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/fatoturoterorofozobesuk.pdfIn PDF document text
  • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/5ea19c652ffa7ad87cb54e2e04429950/dugedek.pdfIn PDF document text
  • http://sun-tes.ru/files/file/40739418252.pdfIn PDF document text
  • http://sartoriaventurini.com/userfiles/files/33846947848.pdfIn PDF document text
  • https://www.barefoothoa.com/webroot/js/ckfinder/userfiles/files/vodoz.pdfIn PDF document text
  • http://signexpowholesale.com/project-new/christianbook/upload_images/file/73518977672.pdfIn PDF document text
  • https://netlandschool.cl/files/dubivovopegagukawinojo.pdfIn PDF document text
  • http://schokoladenbrunnen.de/idata/11476290582.pdfIn PDF document text
  • https://copperscrap.wasteequipment.net/ckfinder/userfiles/files/45438410315.pdfIn PDF document text
  • http://dreamwith.gni.kr/ckupload/files/dafunada.pdfIn PDF document text
  • http://diennuocdanang.com/uploads/image/files/96166526123.pdfIn PDF document text
  • http://gazduire-domeniu.com/UserFiles/file/vupesa.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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