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
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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.
• 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://laborke.ru/uplcv?utm_term=com+android+browser+com+google+android+browser PDF link annotation

  • https://triyoga-tv.ru/userfiles/file/22200282812.pdfIn PDF document text
  • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/70d52df3422dc08f9958004c861b6b86/47441570007.pdfIn PDF document text
  • http://ahdongjiu.com/upload_fck/file/2021-9-3/20210903123612385120.pdfIn PDF document text
  • https://noursportevents.com/wheelmarine/userfiles/file/92973055925.pdfIn PDF document text
  • http://ministryofrum.com/memlogos/file/vubalexejodonuwexekotileg.pdfIn PDF document text
  • https://motoralbini.it/files/file/rivigopivubesefoni.pdfIn PDF document text
  • http://xatrbio.com/userfiles/file/2794229240.pdfIn PDF document text
  • http://hoteldanang.com/uploads/images/files/lafux.pdfIn PDF document text
  • https://funcarele.com/ckfinder/userfiles/files/pivasibalimizijeg.pdfIn PDF document text
  • https://www.la-providence-ehpad.fr/ckfinder/userfiles/files/xibagukibobekotilud.pdfIn PDF document text
  • http://swiss-ex.com/images/blog/file/55159578431.pdfIn PDF document text
  • http://aluminial.pnh.pt/js/ckfinder/userfiles/files/22067461010.pdfIn PDF document text
  • http://bytip.net/filespath/files/20210905123528.pdfIn PDF document text
  • http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/1222157950.pdfIn PDF document text
  • http://thaimassagemodel.com/ckfinder/userfiles/files/rifewenovugarolineg.pdfIn PDF document text
  • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/umruic1kohr89cl01n9d570js1/mexabamevibonogerobawaz.pdfIn PDF document text
  • http://bukharaatlanta.com/sites/default/files/file/dumove.pdfIn PDF document text
  • http://soskuwait.com/outscapes/admin/ckeditor/uploads/ck/files/86967452806.pdfIn PDF document text
  • http://sashtraayurveda.com/ckfinder/userfiles/files/xenuwazaxuvujeliwirunafor.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e6d24849b---96558900042.pdfIn PDF document text
  • http://sportgalaktik.sk/userfiles/file/11087309101.pdfIn PDF document text
  • http://kartelabasligi.com/images_upload/files/92524958236.pdfIn PDF document text
  • http://risorsaterra.it/userfiles/files/11451875703.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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