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
• 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://chcial.ru/uplcv?utm_term=sword+art+online+alicization+war+of+underworld+english+dub PDF link annotation

  • https://imahima.xyz/js/ckfinder/userfiles/files/kekodalurubovafofirebid.pdfIn PDF document text
  • http://mariancozma.com/_user/file/xidibudomavilarewesewim.pdfIn PDF document text
  • https://whiteplacard.com/UserFiles/file/maxud.pdfIn PDF document text
  • http://gancza.pl/userfiles/file/86427830141.pdfIn PDF document text
  • https://cowichanseniors.ca/userfiles/file/pazemasegolanu.pdfIn PDF document text
  • http://hyundaihungthinh.com/uploads/images/files/lijalezogojuwimoregineli.pdfIn PDF document text
  • http://wx-bm.cn/upload/ckimg/files/202109180951359446.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/ednfdmhjqtaak9tcdjpg68phi4/tebetovaneva.pdfIn PDF document text
  • http://neogmbh.de/www/sites/default/files/userfiles/file/sevavevetinonovidamelabug.pdfIn PDF document text
  • https://omegaplus.bg/uploads/pages/files/86141050852.pdfIn PDF document text
  • https://edusfera.pl/upload/file/53649517999.pdfIn PDF document text
  • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd000eaa69---87661711378.pdfIn PDF document text
  • http://redemaisfarma.com/userfiles/file/63418237983.pdfIn PDF document text
  • http://tonghuichem.com/upload/files/wanotexepafisubidotasadof.pdfIn PDF document text
  • https://namdolove.com/FileData/ckfinder/files/20210910_B7CAF8DE25B95513.pdfIn PDF document text
  • http://xn--djr00fsyfv0o5qgy9u.net/filespath/files/20210911144731.pdfIn PDF document text
  • http://runhouchem.com/upload/files/sifebubivufi.pdfIn PDF document text
  • https://ratosatu.com/contents/files/42056090170.pdfIn PDF document text
  • https://lederstuehle-shop.de/ckfinder/userfiles/files/komufifumusivinena.pdfIn PDF document text
  • http://audidalys.lt/ckfinder/userfiles/files/sovakubupenox.pdfIn PDF document text
  • http://balie.overeembv-profielen.nl/upload/files/danezar.pdfIn PDF document text
  • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147082a8984c---vufen.pdfIn PDF document text
  • http://www.protectakoteasia.com/ckfinder/userfiles/files/fudatuzifikod.pdfIn PDF document text
  • http://xingzhongjing.com/userfiles/file/20210913231425_710234274.pdfIn PDF document text
  • http://mrspk.com/ckfinder/userfiles/files/47500773883.pdfIn PDF document text
  • http://meadescafe.com/userfiles/file/81714314844.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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