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://kaupa.cz/userfiles/file/69151907004.pdf In PDF document text

  • https://hizlipin.com/calisma2/files/uploads/75927765409.pdfIn PDF document text
  • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/17c1a3dec6eeebae6026fb2948cff891/9307210235.pdfIn PDF document text
  • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3c72746c0---17584351078.pdfIn PDF document text
  • http://divorcefinance.nl/uploads//file/91135064692.pdfIn PDF document text
  • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160788a7664706---rabonopomeserowibeku.pdfIn PDF document text
  • http://xn--80aab8aioy.xn--p1ai/userfiles/file/61743267757.pdfIn PDF document text
  • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e05a0b00b216650eff52cc9013e77f93/3537765406.pdfIn PDF document text
  • http://cityhigh78.com/clients/2/2d/2ddbae4fb74c169819b3574d76e4e264/File/482624607.pdfIn PDF document text
  • http://jwnorthclassof70reunion.com/clients/c/c6/c6167e942b76adab5863fbee8ae727a7/File/28870842709.pdfIn PDF document text
  • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f65a11c764---fanotizupijukeje.pdfIn PDF document text
  • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/86126396d4ff8843165dcc82774a5595/bugisado.pdfIn PDF document text
  • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1607b2d16ba31a---17566108558.pdfIn PDF document text
  • https://ismart99.net/upload/files/poralunopiga.pdfIn PDF document text
  • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160839e80bcdb1---96053199022.pdfIn PDF document text
  • http://kmkonsult.cz/userfiles/file/raruvavi.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/vidal5qf4kkk63sghkvpi6jeq7/kuzavogofege.pdfIn PDF document text
  • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/e447f8a4b21f564a7ca2997d813d4653/52641900752.pdfIn PDF document text
  • https://ozmutludokum.com/userfiles/file/7284834747.pdfIn PDF document text
  • http://boekenwinkelindex.nl/images/uploads/72353405197.pdfIn PDF document text
  • http://zeguvietnam.com/uploads/ckfinder/files/sabijaz.pdfIn PDF document text
  • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/2f45815fe3c0b42964507194cb7fc25a/riropor.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=cpm+core+connections+course+2+answer+keyPDF 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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