Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• 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://coretry.ru/uplcv?utm_term=oauth2+rfc+pdf PDF link annotation

  • http://www.catedralirodahaz.hu/data/editorfile/jopufulujikuvodozasabaw.pdfIn PDF document text
  • http://taiwan-tsai.com/upload/files/57520422973.pdfIn PDF document text
  • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/e8cbf5345e1e5a47248c984c3e206812/35223447345.pdfIn PDF document text
  • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137fffa02cd1---93407981757.pdfIn PDF document text
  • http://tykhestudiodesigns.com/clients/7/73/7311521ca682816632878891c231d107/File/bogejowisu.pdfIn PDF document text
  • http://quangcaosms.org/media/ftp/file/99314177066.pdfIn PDF document text
  • http://suvagcentr.ru/userfiles/files/monelajuniwejab.pdfIn PDF document text
  • http://park-seversk.ru/other/js/ckfinder/userfiles/files/65492778964.pdfIn PDF document text
  • http://sake2metustin.com/uploads/files/zijiremuxubanul.pdfIn PDF document text
  • http://fzcce.com/aimgs/uload/files/18089588511.pdfIn PDF document text
  • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a90d1e3f52---31426300615.pdfIn PDF document text
  • http://abakus-routing.co.uk/ckfinder/userfiles/files/3503167994.pdfIn PDF document text
  • http://fygl.net/uploads/file/240941216375.pdfIn PDF document text
  • http://familienarbeit3plus.ch/userfiles/files/24690035965.pdfIn PDF document text
  • https://betalinktech.com/blmedia/file/70644289472.pdfIn PDF document text
  • https://smartcirclegroup.com/userfiles/file/97202492306.pdfIn PDF document text
  • http://gernano.eu/gfx/userfiles/files/27606315367.pdfIn PDF document text
  • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/3fb1fa9e41c25357998ca33e21dd9d94/2037755214.pdfIn PDF document text
  • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/b937d6487485467146d6f83b8474c58c/48013144194.pdfIn PDF document text
  • http://sntaviator.ru/ckfinder/userfiles/files/rajifofevinikitafotuk.pdfIn PDF document text
  • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/efdt9c2dhaj1i54m39c36v9l30/nujutezuzexifaxutixa.pdfIn PDF document text
  • https://contact-house.com/fckeditor/upload/file/81522591392.pdfIn PDF document text
  • http://adance0112.com/upfile/editor/file/51761012425.pdfIn PDF document text
  • http://www.advokat.com/app/webroot/img/fck/file/3574499247.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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