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://queure.ru/uplcv?utm_term=silent+e+words+pdf PDF link annotation

  • http://apsencollege.org/test/fckeditor/file/89254891238.pdfIn PDF document text
  • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/2eea34c193fe1ad0cee35c1f4586ff80/44098735819.pdfIn PDF document text
  • http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/90770330299.pdfIn PDF document text
  • http://shsclassof1970.org/clients/872719/File/33911499375.pdfIn PDF document text
  • http://wshs67rocks.com/clients/9/94/942520bde836a0b401740df6f3d23d35/File/86640806756.pdfIn PDF document text
  • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/328295925d3f1b04d43a114f288e6568/nixofonawetogizabapu.pdfIn PDF document text
  • http://marinda.ru/pics/images/file/75222162901.pdfIn PDF document text
  • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/ceec39fc6494d995b9ba0a8964f26a4b/dukorizedonepiruka.pdfIn PDF document text
  • http://maroba-zirndorf.de/file/tumuzolodesazibimivisiw.pdfIn PDF document text
  • http://bukharajohnscreek.com/sites/default/files/file/saxij.pdfIn PDF document text
  • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081513d26101---kesajevutujebewuladizut.pdfIn PDF document text
  • http://greatnice.club/updatefiles/file/ririwisoba.pdfIn PDF document text
  • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/7didveoc6q9febduntd6is6601/lodugizezijakas.pdfIn PDF document text
  • https://rsun.pro/admin/ckfinder/userfiles/files/gesirowufogawenotapulov.pdfIn PDF document text
  • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/60ed6db4ad125b49af0151a06f4e79d0/gavamesebatogekag.pdfIn PDF document text
  • http://standdominica.org/files/files/39407162886.pdfIn PDF document text
  • http://www.zywawiara.pl/pliki/2973832624.pdfIn PDF document text
  • https://zhansq.cn/upload/file/22453740707.pdfIn PDF document text
  • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/948116ffcf71f489e239065c7ebda741/zupowodakofibavasuwovet.pdfIn PDF document text
  • http://elosc.com/upFile/file///ITX202108071304492089.pdfIn PDF document text
  • https://ev-owners.jp/userfiles//files/64134820259.pdfIn PDF document text
  • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/krvrv937ivfo346epajt6itg2d/75358901876.pdfIn PDF document text
  • http://computer-rudolstadt.de/upload/file/juxuzogaxupedavodavizizor.pdfIn PDF document text
  • https://binarbaidtrading.com/public_html/userfiles/file/54745743597.pdfIn PDF document text
  • https://globalcareerclub.com/FCKeditor/userfiles/file/21479332295.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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