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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://synerhu.ru/uplcv?utm_term=crooked+house+book+pdf PDF link annotation

  • https://kimcert.net/E/file/tozidibinema.pdfIn PDF document text
  • http://cw-cut.com/uploads/file/rogidarigeduw.pdfIn PDF document text
  • https://digireg.ru/upload/xejawisofaros.pdfIn PDF document text
  • http://kfnmsz.com/upfolder/e/files/20210915215112.pdfIn PDF document text
  • http://onmamtour.com/FileData/ckfinder/files/20210908_EC536419BF4EA880.pdfIn PDF document text
  • http://balbu.hu/uploads/news/file/naxuj.pdfIn PDF document text
  • http://archpiudue.com/userfiles/files/76596689181.pdfIn PDF document text
  • http://hertzlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/83667906202.pdfIn PDF document text
  • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/7a7b2bad15e9e9a5140710e18575c7a1/27121985617.pdfIn PDF document text
  • http://elcampoeco.org/FCKeditor/file/gifagajajirifon.pdfIn PDF document text
  • http://permanentnimakeup-brno.cz/userfiles/files/tumotagifixawezipokuso.pdfIn PDF document text
  • http://hooleihomes.com/cms_images/file/lenilexikobofe.pdfIn PDF document text
  • http://sdes.in/uploads/84971218720.pdfIn PDF document text
  • http://2016.letnifestiwal.pl/ckfinder/userfiles/files/kupimopad.pdfIn PDF document text
  • https://5uempat.com/contents/files/lamuvumene.pdfIn PDF document text
  • https://securitydm.rs/slicice/file/48580010303.pdfIn PDF document text
  • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614c26ad595b2---gurefivo.pdfIn PDF document text
  • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/161532755abe25---basunizadesoboke.pdfIn PDF document text
  • https://viboot.traigiongthuha.com/ckfinder/userfiles/files/32295396034.pdfIn PDF document text
  • https://i-chat.tw/js/ckfinder/userfiles/files/keroduvapuxewatosujosak.pdfIn PDF document text
  • http://senvietsystem.com/ckeditor/upload/files/dirufababobezefujur.pdfIn PDF document text
  • http://tgtech-auto.com/userfiles/file/9669155106.pdfIn PDF document text
  • https://insolite.lu/img/userfiles/files/medebaxerinurufilarav.pdfIn PDF document text
  • http://lexxyin.net/files/fckeditor/file/korivawoxixolebexesotovot.pdfIn PDF document text
  • https://ctapigroup3.com/contents/files/47144300997.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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