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 https://ketchas.ru/uplcv?utm_term=up+board+paper+2018+class+10+pdf+download PDF link annotation

  • http://umffz21.ru/admin/ckfinder/userfiles/files/titatudezutozuvalasoju.pdfIn PDF document text
  • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/85c0040430d19a8eb9615e6fb62bf4d5/69567171753.pdfIn PDF document text
  • http://bienbao.net/uploads/files/56836328978.pdfIn PDF document text
  • http://acupunctuuryao.nl/ckfinder/userfiles/files/4475564295.pdfIn PDF document text
  • http://musclecar-taps.com/js/upload/files/21437385913.pdfIn PDF document text
  • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/d0830315c8b8428994a64123485484a4/rewesuxusesa.pdfIn PDF document text
  • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/id6o7m68jut37mrcs73rmqmku2/jiwunomakap.pdfIn PDF document text
  • http://lab4050.com/upload/editor/file/20756162834.pdfIn PDF document text
  • http://aibasavar.edu.bd/app/webroot/ckfinder/userfiles/files/32346435327.pdfIn PDF document text
  • http://zlato-stribro-investice.com/upload/files/68486194172.pdfIn PDF document text
  • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/04938e5a02669d02febc69a74ccfcc48/3280129696.pdfIn PDF document text
  • http://sherwoodchambergolf.org/ckfinder/userfiles/files/zitoxitofitabukap.pdfIn PDF document text
  • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161211544d02bd---17758303741.pdfIn PDF document text
  • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/2ed82c3859271635ad1bf11163877e86/pilijuxedogixuguvusegun.pdfIn PDF document text
  • http://yakutiaprime.ru/SITE/files/editor/file/31473380567.pdfIn PDF document text
  • http://abwrichmond.com/uploads/files/ramodagoj.pdfIn PDF document text
  • http://www.dr.schure.net/ckfinder/userfiles/files/sudeguboruxakof.pdfIn PDF document text
  • http://alnadaoil.com/userfiles/file/2481091259.pdfIn PDF document text
  • http://umbabox.com/userfiles/file/lafonotigisufimaw.pdfIn PDF document text
  • http://perechen-jurnalov.ru/js/ckfinder/userfiles/files/jojejomas.pdfIn PDF document text
  • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/5bd10dd6ade97fe76e166e564affc3d6/vapuvula.pdfIn PDF document text
  • http://aucoindeshalles.com/menu/file/68675360400.pdfIn PDF document text
  • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcddc034dc2---welufavogufurixonowi.pdfIn PDF document text
  • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/626dc06c847e6d3f8fcb149f2383a265/pudarisunojo.pdfIn PDF document text
  • https://dm288.rs/slicice/file/82678911896.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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