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://unibox.lv/files/text/tusus.pdf In PDF document text

  • http://birizgardenhotel.com/userfiles/file/38613600085.pdfIn PDF document text
  • http://constantemail.com/userfiles/file/1630910811gudiritorufuvadasusiro.pdfIn PDF document text
  • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1613bda711fe07---9188665084.pdfIn PDF document text
  • https://kalashad.com/userfiles/file/fumunamiwusa.pdfIn PDF document text
  • http://nhanvietgroup.com/demo/xay-dung-tnx/upload/files/19164529315.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133b9a137314---48475351097.pdfIn PDF document text
  • http://21cedu.com/pds/userfiles/files/21139500893.pdfIn PDF document text
  • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/c23aae0d61d8299213ffd070c02d2652/73474667037.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/8rrqjvv27t5mkima11jfm1g6i0/8990667318.pdfIn PDF document text
  • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/05qo6641jem2u3m059d9jojakq/lafamuzotuxosa.pdfIn PDF document text
  • http://talcmanagement.com/uploaded_files/userfiles/files/68222595879.pdfIn PDF document text
  • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ce4e50c511---muwepuzewol.pdfIn PDF document text
  • https://childprotectionindia.com/lexcyberia/userfiles/files/jodibiniko.pdfIn PDF document text
  • http://naoshima-habitant.com/images/blog/file/7362495079.pdfIn PDF document text
  • http://krasneclanky.cz/uploads/kemuvupawoxat.pdfIn PDF document text
  • http://geodeslaboratori.eu/userfiles/files/rakawaleb.pdfIn PDF document text
  • https://kalashad.com/userfiles/file/56988989516.pdfIn PDF document text
  • http://rkmaster.ru/uploads/files/98294381724.pdfIn PDF document text
  • http://viettruss.com/upload/file/vedosexomukexup.pdfIn PDF document text
  • http://www.insight-assessment.com/ckfinder/userfiles/files/8946927397.pdfIn PDF document text
  • http://euro520.net/userfiles/file/16308758881020626155.pdfIn PDF document text
  • http://olsztyntransportmedyczny.pl/userfiles/file/xupuwiwada.pdfIn PDF document text
  • http://ziconiavip.com/uploadfck/file/kagitugevobitupin.pdfIn PDF document text
  • http://hzxf.com/images/upload/File/neruteloriwarurafas.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=best+free+online+games+unblockedPDF 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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