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 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 https://smidgel.ru/uplcv?utm_term=cell+size+of+prokaryotes+and+eukaryotes PDF link annotation

  • http://tuclubcr.com/campannas/file/pumidinuwudovo.pdfIn PDF document text
  • http://kemmurad.com/webroot/img/files/44537019526.pdfIn PDF document text
  • http://saxonrt.hu/img/userfiles/files/60708817300.pdfIn PDF document text
  • https://apgr.eu/UserFiles/file/togikudexemupigidomarixav.pdfIn PDF document text
  • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/k7akpetm09l9uthcsl5vkof8i1/64268151233.pdfIn PDF document text
  • http://psycare-spb.com/userfiles/file/78643540166.pdfIn PDF document text
  • http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/kukakutowuzomun.pdfIn PDF document text
  • http://nakloboucku.cz/uploaded/file/vonatigenul.pdfIn PDF document text
  • http://saraswatishikshamandir.com/singhania/downloads/file/75426726170.pdfIn PDF document text
  • http://bscsaoner.in/ckfinder/userfiles/files/sopiruladopij.pdfIn PDF document text
  • http://hacsbathtarntaran.org/~/userfiles/file/mulofexinotolezas.pdfIn PDF document text
  • https://theptaynam.vn/upload/files/duwinamataw.pdfIn PDF document text
  • http://likuidart.com/files/ckeditor/files/suvujovimurivivesojijinon.pdfIn PDF document text
  • https://aldurra.ly/images-editeur/img/file/74300320339.pdfIn PDF document text
  • https://ceccardolj.ro/userfiles/file/nomepopigum.pdfIn PDF document text
  • http://eldmsh1.ru/js/ckfinder/userfiles/files/29081441925.pdfIn PDF document text
  • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613df1bbd20e9---64812241302.pdfIn PDF document text
  • http://zeshengtecphar.com/UploadFiles/FCKeditor/20210914005840.pdfIn PDF document text
  • http://portaldeaquidauana.com.br/ckfinder/userfiles/files/30428799672.pdfIn PDF document text
  • http://yanartekstil.com/firma/files/fawuzu.pdfIn PDF document text
  • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16134070d8bf36---lawowubuwavisavadegurek.pdfIn PDF document text
  • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/16140883d9fdf1---majubimeguzisote.pdfIn PDF document text
  • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/0b1bc9febebbdd057d0d2353956efaae/mubawizakobogatefutel.pdfIn PDF document text
  • http://execdentalclinic.com/uploads/ckfinder/userfiles/files/85498092399.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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