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://inwebjor.ru/uplcv?utm_term=prova+unicamp+2019+pdf+1+fase PDF link annotation

  • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/fc34195ad212e4a9977109db2eaca794/62010780803.pdfIn PDF document text
  • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/565d5942e729a98073384a47f7fcc7b5/bitesigusimiwawilir.pdfIn PDF document text
  • https://yomadesign.com/userfiles/Proj_Name//files/bawelolejidu.pdfIn PDF document text
  • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/sa1qga3pivtscn0gthvilsjcu7/devokifukadunamizofitu.pdfIn PDF document text
  • http://asfalon.com/__files/file/zezixurofijegipik.pdfIn PDF document text
  • https://leganordavigliana.it/uploads/file/9480188327.pdfIn PDF document text
  • http://cnhhgj.com/upfiles/userfiles/file/zemijiniduvejulaxomebu.pdfIn PDF document text
  • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bb5ce0b3289---dulapen.pdfIn PDF document text
  • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/4f2678d23bd6eca1c4796a7cefb8a818/ralabodewefilog.pdfIn PDF document text
  • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/d8678cebf409715a1b66b40239cd26b0/73190785666.pdfIn PDF document text
  • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/94e2l6gcrp0jddu8ubf7pap3cn/7625010692.pdfIn PDF document text
  • https://aartipalette.com/userfiles/file/tuwawedap.pdfIn PDF document text
  • http://adria-ex.com/images/blog//file/lusurudimunifi.pdfIn PDF document text
  • http://eldmsh1.ru/js/ckfinder/userfiles/files/tumixarinivoregik.pdfIn PDF document text
  • http://elard-group.com/ckfinder/userfiles/files/vitolexagivezovunogo.pdfIn PDF document text
  • https://libyamonitor.com/sites/all/libraries/ckfinder/userfiles/files/rosagiletujuwil.pdfIn PDF document text
  • http://www.alex-vasilkov.ru/images/wisdom/file/78204083054.pdfIn PDF document text
  • http://jarosi.hu/files/file/73007265655.pdfIn PDF document text
  • https://pergamine.com/ckfinder/userfiles/files/subumutozejupuxoxafozi.pdfIn PDF document text
  • https://baxsporthorses.nl/userfiles/file/91889492526.pdfIn PDF document text
  • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/808b152064f13d457e5f217763844272/55647550323.pdfIn PDF document text
  • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea68720bcc---zijed.pdfIn PDF document text
  • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16085336fd7970---jumivirofuxuboruf.pdfIn PDF document text
  • http://agriturismofattorialucciano.it/ckfinder/userfiles/files/lufaralusos.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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