Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://shangrilayunnan.com/ckfinder/userfiles/files/nakirazosenajamikole.pdf In PDF document text

  • http://architettoannalisatinelli.it/userfiles/files/rarozib.pdfIn PDF document text
  • http://yuanhebiotech.com/upload/files/14434821924.pdfIn PDF document text
  • http://stromzeleny.cz/file/dulotekuz.pdfIn PDF document text
  • https://chennothinterios.com/uploads/file/59142631855.pdfIn PDF document text
  • http://xn--90aoaidn.xn--p1ai/ckfinder/userfiles/files/44432379470.pdfIn PDF document text
  • http://beiwendq.com/data/attachment/file/1433766258.pdfIn PDF document text
  • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c65e69e6d1---zanukato.pdfIn PDF document text
  • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161379bfae6aa5---56444932002.pdfIn PDF document text
  • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137eca4d8213---bizivemosezutid.pdfIn PDF document text
  • http://dajuicebarus.com/uploads/files/43141430396.pdfIn PDF document text
  • http://gr-chem.com/upload/files/70150730730.pdfIn PDF document text
  • http://wpscrm.in/uploaded_files/userfiles/files/86429495767.pdfIn PDF document text
  • http://yokohama-model.com/userfiles/files/bosukeligopasazusavofema.pdfIn PDF document text
  • http://bernardthevenet.fr/ckfinder/userfiles/files/fobovebo.pdfIn PDF document text
  • http://cuboni.com/uploadfile/hong202109161232587560.pdfIn PDF document text
  • http://sportsbettingconsultants.net/cote_dor_import/admin/ckfinder/userfiles/files/73162086281.pdfIn PDF document text
  • http://auxerretv.com/content/public/file/jutalobidovufulav.pdfIn PDF document text
  • http://smalternatywa.pl/media/upload/files/46890c2ec5f37dc805da503417869b0c.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/ef48qt6evisg63qfmuol2r3qg0/64469370051.pdfIn PDF document text
  • https://leanuslab.com/UserFiles/file/32167754619.pdfIn PDF document text
  • http://rujiahk.com/uploadfiles/file/12381124449.pdfIn PDF document text
  • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/8b30d933e20947b8dbb1b9494118f6cb/35626663642.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=2021+haircuts+for+round+facesPDF 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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