Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://cructi.ru/uplcv?utm_term=chrome+os+download+windows+10 PDF link annotation

  • http://www.catedralirodahaz.hu/data/editorfile/81292654009.pdfIn PDF document text
  • http://parzenica-bialka.pl/userfiles/files/vewatijovegog.pdfIn PDF document text
  • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141b844ce03a---kopuxoxetili.pdfIn PDF document text
  • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/osnabgslqqa6riq70rv21k5553/tiwutipivijibam.pdfIn PDF document text
  • http://npi-management.com/ressource/site-image/files/70221306187.pdfIn PDF document text
  • http://maslag.eu/userfiles/file/21329971805.pdfIn PDF document text
  • http://www.szphotar.com/admin/img/files/nutaku.pdfIn PDF document text
  • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb6bcaf089---zilokojirururepazoxuvig.pdfIn PDF document text
  • http://mayingiabao.com/upload/files/razedibeluf.pdfIn PDF document text
  • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137a6f547167---63433569173.pdfIn PDF document text
  • https://cupanghitam.com/contents/files/wazinufimovegulanivipe.pdfIn PDF document text
  • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c3d80c61ba---vumafilu.pdfIn PDF document text
  • http://viprealestatebrokers.com/userfiles/files/21991922770.pdfIn PDF document text
  • http://rideabikenews.com/user_img/files/21961429739.pdfIn PDF document text
  • https://aannemingsbedrijfbarthulsbosch.nl/userfiles/file/21393646195.pdfIn PDF document text
  • http://bronnicy.inhome360.ru/admin/ckfinder/userfiles/files/sulobibikasewop.pdfIn PDF document text
  • https://panama4d.com/contents/files/lejanisosanunapuno.pdfIn PDF document text
  • http://commsoft.nu/demo/ktb/wsmbilder/files/sazefenisafave.pdfIn PDF document text
  • http://windowsplusllc.com/ckfinder/userfiles/files/74548248234.pdfIn PDF document text
  • http://marasintl.com/public/ckfinderuploads/files/53436870011.pdfIn PDF document text
  • http://rosritual.su/app/webroot/js/ckfinder/userfiles/files/89803149234.pdfIn PDF document text
  • https://rowsontw.com/shopadmin/upload/files/14989565606.pdfIn PDF document text
  • http://cluster006.ovh.net/~greeters/namur/ckfinder/userfiles/files/sifenudaxilelez.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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