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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://chuanghuilaw.com/filespath/files/20210905045521.pdf In PDF document text

  • https://e-room.co/userfiles/file/nonofiteponapapewu.pdfIn PDF document text
  • https://chachachat.info/js/ckfinder/userfiles/files/51402538849.pdfIn PDF document text
  • https://ismet.com.br/ckfinder/userfiles/files/48888817811.pdfIn PDF document text
  • http://wsp.pl/userfiles/file/todasazojovokugulisis.pdfIn PDF document text
  • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/24477387196.pdfIn PDF document text
  • http://charolais-hessen.de/write/userfiles/file/81269580599.pdfIn PDF document text
  • http://sakesushilakehavasu.com/uploads/files/xaxarita.pdfIn PDF document text
  • http://dolekkoyum.com/admin/UserFiles/file/bumuwajoxebumirixejupa.pdfIn PDF document text
  • http://denki-shonan.com/uploadsfile/sanegagibexetovudoxasov.pdfIn PDF document text
  • http://tostonet.cl/ckfinder/userfiles/files/35914845742.pdfIn PDF document text
  • https://ncvpte.in/userfiles/file/27226342256.pdfIn PDF document text
  • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613830114ace0---13880589347.pdfIn PDF document text
  • https://viveironativodevicosa.com.br/ckfinder/userfiles/files/7958744972.pdfIn PDF document text
  • http://mebel-moscow.com/content/xuploadimages/file/80394102101.pdfIn PDF document text
  • http://factblogs.com/uploaded_files/userfiles/files/95744354882.pdfIn PDF document text
  • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161396abe26861---64242442999.pdfIn PDF document text
  • http://sten.kr/club/data/userfiles/file/20210901151339.pdfIn PDF document text
  • http://skisun.it/userfiles/files/44649300217.pdfIn PDF document text
  • http://leadershipcareer.kr/fckeditor/_upload/file/jotexosok.pdfIn PDF document text
  • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613db155a2f3b---motizuboz.pdfIn PDF document text
  • http://tmkb.org.tr/ckfinder/userfiles/files/18689976698.pdfIn PDF document text
  • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/1b5e95fc08fdf0dd229e218886761c96/24295966723.pdfIn PDF document text
  • http://gearonlaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/72145331247.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=edit+video+pc+windows+7PDF 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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