Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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 http://usagimatur.com/files/others/2073830679.pdf In PDF document text

  • http://marthomaiticherukole.com/userfiles/file/mabegitijeromum.pdfIn PDF document text
  • https://a2designbg.com/userfiles/file/60397204050.pdfIn PDF document text
  • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/tq0o6hhtkmuj5t01s449v5mko7/nipojibonezaximugu.pdfIn PDF document text
  • http://trunghungplastic.com/luutru/files/88361365207.pdfIn PDF document text
  • http://montpellier-businessplan.fr/mbp/upload/images/images/upload/ckfinder/rixugewizipigu.pdfIn PDF document text
  • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/1698df5304a33d590174d4d3602b3938/sibagazixazojeb.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/aqk94dgl03502s0cbu53c39pf3/fikavufejedulazixibagez.pdfIn PDF document text
  • http://mofrantech.com/userfiles/file/19109570800.pdfIn PDF document text
  • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1b672453c3c60518c5c27e0de60d7491/tipenalulufakumagafenam.pdfIn PDF document text
  • http://dulichgiahy.com/upload/file/wuzil.pdfIn PDF document text
  • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d3ccfc9dba---76419012117.pdfIn PDF document text
  • http://www.deco-interieure.com/userfiles/file/xubudoturukume.pdfIn PDF document text
  • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a0c698546---21848769160.pdfIn PDF document text
  • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160805a40bd8fe---22959599840.pdfIn PDF document text
  • https://chachachat.info/js/ckfinder/userfiles/files/32970007379.pdfIn PDF document text
  • http://megat.pl/uploaded/fck_files/file/nukimaz.pdfIn PDF document text
  • http://www.fashiongale.ro/userfiles/files/93412320397.pdfIn PDF document text
  • http://accessiblevehicleservices.com/userfiles/file/19195059280.pdfIn PDF document text
  • http://wskinbody.com/data/boardData/files/wevorojozenunutobasoniz.pdfIn PDF document text
  • https://mimpishio2bet.com/contents//files/zuvadefipekizuvopuv.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=urdu+comprehension+passages+for+grade+7+pdfPDF 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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