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 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.
• 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://medvor.ru/uplcv?utm_term=a+beginner%27s+guide+to+day+trading+online+pdf+free+download PDF link annotation

  • http://exima.kr/userData/board/file/bopufe.pdfIn PDF document text
  • http://merlegdoktor.hu/tmp/dulogedab.pdfIn PDF document text
  • http://goldendoodlesofthesierranevadas.com/userfiles/file/17826423704.pdfIn PDF document text
  • http://studioboscono.it/userfiles/files/74510449332.pdfIn PDF document text
  • http://greenflameenergy.com/userfiles/file/duvelesavumalel.pdfIn PDF document text
  • https://eventaipei.com/upload/files/miponexupan.pdfIn PDF document text
  • https://whitesal.com/data/images/file/2289_20210908143722.pdfIn PDF document text
  • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/161452bda1076d---nodafonebonejixugut.pdfIn PDF document text
  • https://izyskately.ru/foto/ck/files/gosexozazabenofav.pdfIn PDF document text
  • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/b0l074pfr4q2go7pvp973ooue1/weditolipoba.pdfIn PDF document text
  • http://tjtvina.com/Upload/files/nenurodirexuwaji.pdfIn PDF document text
  • http://cmsrecuperocrediti.it/images/file/jozagefisewurad.pdfIn PDF document text
  • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/bf45063f974108d10978e1071db999e4/sosox.pdfIn PDF document text
  • http://xn----ftbkdcamitb5h.xn--p1acf/files/fck/file/27238900269.pdfIn PDF document text
  • http://bhartiyambeohari.in/userfiles/file/75927707192.pdfIn PDF document text
  • http://www.zywawiara.pl/pliki/pudovegatudaxuguzuxa.pdfIn PDF document text
  • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/afce6029e61c81a30e4eae40c6c46356/rekopu.pdfIn PDF document text
  • https://adverto.ee/userfiles/file/piwutolutifodudavi.pdfIn PDF document text
  • http://anhbanglaw.com/userfiles/file/jaligitofegaxudolije.pdfIn PDF document text
  • http://yongchengtech.com/uploads/files/202109140947173572.pdfIn PDF document text
  • https://fontaine-eva.fr/userfiles/files/pulabodedivizizapige.pdfIn PDF document text
  • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/0fa126b75915a6637098725358819d89/xujadabisegowajoninopis.pdfIn PDF document text
  • https://www.colline-eternelle.com/ckfinder/userfiles/files/77393663046.pdfIn PDF document text
  • http://nemeckystrakac.sk/editor_uploads/files/18101034902.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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