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
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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://medvor.ru/uplcv?utm_term=apk+to+tizen+converter PDF link annotation

  • http://njuhome.pl/ckfinder/userfiles/files/63990360167.pdfIn PDF document text
  • https://orig-shop-gsm.ro/ckfinder/userfiles/files/19597978177.pdfIn PDF document text
  • http://2446665a.ru/ckfinder/userfiles/files/firofevezomezibupewazi.pdfIn PDF document text
  • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb81e869fa---xozavejigumezo.pdfIn PDF document text
  • https://tranduongauto.com/app/webroot/files/images/pages/files/gunobafogawutimusadiza.pdfIn PDF document text
  • http://technimexvn.com/images/ckeditor/files/47284449211.pdfIn PDF document text
  • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/fklg7rhtn0pq4fds9n68uelje6/22696823172.pdfIn PDF document text
  • https://zevkotodoseme.com/upload/ckfinder/files/pubexade.pdfIn PDF document text
  • http://4darchitecture.org/img/all/41793915131.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/92410513707.pdfIn PDF document text
  • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/8dee3fae1090fcefa20327d14c842cfa/62899817839.pdfIn PDF document text
  • https://syntellect.ru/Repository/file/joxuvegatorefaga.pdfIn PDF document text
  • http://ux02.wadhost.com/js/ckfinder/userfiles/files/91910772687.pdfIn PDF document text
  • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/161312eb228ee2---rifekaduwaf.pdfIn PDF document text
  • https://ripedzn.com/app/webroot/files/fckeditor/file/40397619704.pdfIn PDF document text
  • http://articolo17.it/siti/usr/foto/files/8937368188.pdfIn PDF document text
  • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/govelikuvid.pdfIn PDF document text
  • http://sanphamhanquocymy.com/uploads/files/zupuraj.pdfIn PDF document text
  • http://fujieshubao.com/zk/UploadFile/file/2021091518120973499.pdfIn PDF document text
  • http://agataklimowska.pl/userfiles/file/25547036342.pdfIn PDF document text
  • http://kramnyca.info/img/upload/editor/file/42899956586.pdfIn PDF document text
  • http://awarelaxcentrum.cz/user_files/file/wuvagekojifam.pdfIn PDF document text
  • https://cvsc.co/userfiles/file/bakixipamifiwa.pdfIn PDF document text
  • http://teplo76.ru/uploads/file/kepuvozepiwolu.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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