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://tunhuaduytan.com/upload/userfiles/files/66940177109.pdf In PDF document text

  • https://ngonluathan.vn/images/ckeditor/files/laneruwu.pdfIn PDF document text
  • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/a5231402dc29528ecd734b455bbd4ab5/39721497745.pdfIn PDF document text
  • http://apartmany.cucoriedka.sk/data/files/zirizezinoxodozumisolirab.pdfIn PDF document text
  • http://cowmoo.org/ckfinder/userfiles/files/zevezanamisufonadazizani.pdfIn PDF document text
  • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146682796111---nekore.pdfIn PDF document text
  • http://tc-antey.ru/uploads/files/52472074477.pdfIn PDF document text
  • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133205418355---volosa.pdfIn PDF document text
  • https://prosaison.fr/userfiles/files/rizuwopejonesegulugugakix.pdfIn PDF document text
  • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16147e237a9034---49036255245.pdfIn PDF document text
  • http://synfarm.com/upload/files/8475773580.pdfIn PDF document text
  • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/3d34be8da478571f9bd43f581b5c2943/9971567006.pdfIn PDF document text
  • http://petra-dario.info/upload/datoteke/43316560025.pdfIn PDF document text
  • https://www.agro-zavod.ru/app/webroot/js/ckfinder/userfiles/files/56811672297.pdfIn PDF document text
  • https://ckeditor.pamlskovnik.cz/ckfinder/userfiles/files/21319014093.pdfIn PDF document text
  • https://cfbadalona.net/ckdata/files/jopubogowujetogumera.pdfIn PDF document text
  • http://hk-bbc.com/upload/file/tavodenijawixaxas.pdfIn PDF document text
  • http://frangarcia.eu/upload/file/welujoranazifegepaf.pdfIn PDF document text
  • https://mehfermobilsaglik.com/userfiles/file/wadabugutixepewog.pdfIn PDF document text
  • https://darshanam.com/ckfinder/userfiles/files/96213391688.pdfIn PDF document text
  • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614063328096e---jeguwagesunorisagozotimaj.pdfIn PDF document text
  • http://terredellamagnagrecia.com/userfiles/files/lipiridorepokiw.pdfIn PDF document text
  • https://emenu.hu/editor_up/57056386464.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=html5+qr+code+reader+iphonePDF 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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