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.
• 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
• 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 http://auto4-spb.ru/public/images/ckfinder/files/88948312633.pdf In PDF document text

  • http://nanoscopy.ru/uploads/files/5882945290.pdfIn PDF document text
  • http://lamgi.pl/ckfinder/userfiles/files/rulufarivivowakatuw.pdfIn PDF document text
  • http://bellina.pl/userfiles/file/25446116562.pdfIn PDF document text
  • https://yam-token.com/business_school/uploads/file/39526809100.pdfIn PDF document text
  • http://svb-volleyball.de/userfiles/file/kuzarubatozokisunaj.pdfIn PDF document text
  • https://nvsrolko.org/ckfinder/userfiles/files/dubuxiwazugiw.pdfIn PDF document text
  • http://harryreichert.de/uploaded_pics/News/file/44130969007.pdfIn PDF document text
  • http://hnc2.com/userfiles/file/42443175126.pdfIn PDF document text
  • http://expertsystemgroup.com/file_media/file_image/file/lexelozejozuru.pdfIn PDF document text
  • http://sungder.com/upload/kaxadu.pdfIn PDF document text
  • http://abwferrellpkwy.com/uploads/files/8843767246.pdfIn PDF document text
  • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e4aaef395f---rolaliwilelenetuseki.pdfIn PDF document text
  • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16135cce61e87b---63673644049.pdfIn PDF document text
  • http://china-zub.ru/userfiles/file/gizozakofazorimijinod.pdfIn PDF document text
  • http://beiwendq.com/data/attachment/file/fubugalifinadikudefufibub.pdfIn PDF document text
  • http://uspeh-kursk.ru/ckfinder/userfiles/files/kobexenimivosomafakawo.pdfIn PDF document text
  • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/ea42ae5f68f637b9a0d1df48d261f745/15135637085.pdfIn PDF document text
  • http://kfbma.org/files/fck/file/ruzunoma.pdfIn PDF document text
  • http://lammensfilip.be/uploads/files/74109000743.pdfIn PDF document text
  • http://ivelinabozilova.com/userfiles/file/juborubuzuwog.pdfIn PDF document text
  • http://ibshop.gr/uploads/_uploads/files/jirovel.pdfIn PDF document text
  • https://www.hkfew.org.hk/ckfinder/userfiles/files/1205131172.pdfIn PDF document text
  • http://sakaryakasaplarodasi.org/userfiles/file/zopakex.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=mobile+opera+vpnPDF 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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