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 https://laborke.ru/uplcv?utm_term=textbook+of+biochemistry+for+nurses+free+download PDF link annotation

  • http://sfipl.in/userfiles/file/bemejagolo.pdfIn PDF document text
  • http://tiyuchangdi.com/upload_files/files/20210902_141917.pdfIn PDF document text
  • https://jagamimpi.net/contents/files/55447414323.pdfIn PDF document text
  • http://onlineticketreview.com/images/file/kagujiwiluga.pdfIn PDF document text
  • https://upaspor.com/resimler/files/30606280740.pdfIn PDF document text
  • http://arcomproltd.com/userfiles/file/xuguvo.pdfIn PDF document text
  • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/rfh0iclit4vcoklo1cmvmaam1g/46183599670.pdfIn PDF document text
  • http://pasaru.com/upload/files/gemavomofisazepigojof.pdfIn PDF document text
  • http://studiocariola.com/userfiles/files/98473419249.pdfIn PDF document text
  • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/62ad4564455898fa1a0df58c95c68769/wataxopoke.pdfIn PDF document text
  • http://tikatalog.sk/_files/file/6326304312.pdfIn PDF document text
  • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147d98eaa3af---36470828425.pdfIn PDF document text
  • http://lulanjina.net/upload/files/xirijidofalilogoz.pdfIn PDF document text
  • https://svenjakretschmer.com/ckfinder/userfiles/files/sasulanusib.pdfIn PDF document text
  • http://radissonhoteltraining.com/userfiles/file/27641097639.pdfIn PDF document text
  • http://topliving.sk/userfiles/file/bovapezolumev.pdfIn PDF document text
  • https://suprizpin.com/calisma2/files/uploads/4891654699.pdfIn PDF document text
  • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/cf864520a1000126797e4cf29c080246/42807364680.pdfIn PDF document text
  • http://reclameindex.nl/images/uploads/98458409122.pdfIn PDF document text
  • http://sjanzee.nl/file/genujojob.pdfIn PDF document text
  • http://vin-baietii.ro/ckfinder/userfiles/files/wegunodazo.pdfIn PDF document text
  • http://giadinhlaurenso.org/upload/files/47679097618.pdfIn PDF document text
  • http://turskazka.ru/ckfinder/userfiles/files/13971800336.pdfIn PDF document text
  • https://sunsoftinfoway.net/ckfinder/userfiles/files/46641305556.pdfIn PDF document text
  • http://theurbanthinktank.com/files/36307154695.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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