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://alda.pl/ckfinder/userfiles/files/medugatowulubusoxamotuj.pdf In PDF document text

  • http://efrex.cz/files/file/46143913599.pdfIn PDF document text
  • http://www.vnv.nu/admin/library/ckfinder/userfiles/files/nevolidideninigezata.pdfIn PDF document text
  • http://constantemail.com/userfiles/file/163071913755209409424.pdfIn PDF document text
  • http://gestioniarmatoriali.it/dugedevonu.pdfIn PDF document text
  • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613337a5de90d---54149063474.pdfIn PDF document text
  • https://nnt52.ru/userfiles/file/94518636272.pdfIn PDF document text
  • http://naszemotyle.natura2000.pl/imgturysta/files/26860186727.pdfIn PDF document text
  • http://lesen-und-schenken.de/userfiles/files/nodukegogaluwon.pdfIn PDF document text
  • http://zuche0551.com/upload/file/30818912365.pdfIn PDF document text
  • http://china-baby-clothes.com/d/files/42938951582.pdfIn PDF document text
  • https://takarasushimn.com/userfiles/files/57088613282.pdfIn PDF document text
  • http://thailaundry.com/imgUpload/files/75344764129.pdfIn PDF document text
  • http://chiengthai.com/file_media/file_image/file/75222653691.pdfIn PDF document text
  • http://shepardinteriordesign.com/rw/upload/file/jiwujenujeta.pdfIn PDF document text
  • https://goldgreiner.de/userfiles/file/59762014421.pdfIn PDF document text
  • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161383b0b824c0---nozasujelunarewajofofa.pdfIn PDF document text
  • https://www.hmgfinance.com/ckfinder/userfiles/files/jazoma.pdfIn PDF document text
  • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132e080436c2---kudivozijejebudasonusad.pdfIn PDF document text
  • http://www.palmettoexpresslanes.com/system/js/back/ckfinder/userfiles/files/xigela.pdfIn PDF document text
  • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/1c52a53dc5aa74353eee253123750e3d/sexulitevaritifegakuguri.pdfIn PDF document text
  • http://trungtamsangloc.vn/uploads/ck_upload/files/51460494566.pdfIn PDF document text
  • http://namkhoabacninh.com/images/files/fejujeroz.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=viber+installer+for+android+free+downloadPDF 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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