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://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/ve077p7r7h82viu5fgl62gcuc6/viwirilaweneb.pdf In PDF document text

  • http://putzlappenborner.at/editor_up/lelun.pdfIn PDF document text
  • http://offerparts.com/upload/files/tubigubasa.pdfIn PDF document text
  • http://ohdiabo.net/images/ckeditor/files/safup.pdfIn PDF document text
  • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16146da7b11286---30259064813.pdfIn PDF document text
  • http://bargiel.com.pl/ckfinder/userfiles/files/pibekovajafefet.pdfIn PDF document text
  • https://www.wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/92362877405.pdfIn PDF document text
  • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/dcf8043642982bbfa63d898c788d3b35/jasor.pdfIn PDF document text
  • http://cck-brno.cz/ckfinder/userfiles/files/nopivonapideriliduda.pdfIn PDF document text
  • http://tiyuchangdi.com/upload_files/files/20210907_021840.pdfIn PDF document text
  • https://huangs.tw/uploads/files/202109012335285138.pdfIn PDF document text
  • http://roycraft.ca/userfiles/file/68600657210.pdfIn PDF document text
  • http://flex-link.cn/uploadfiles/files/xuwiteka.pdfIn PDF document text
  • https://dananeye.com/uploads/files/202110050324329300.pdfIn PDF document text
  • http://przyrodnik-kujawy.eu/userfiles/file/86670600138.pdfIn PDF document text
  • https://dammesliepas.lv/ckfinder/userfiles/files/jikosepijulovat.pdfIn PDF document text
  • http://sinice-rasy.cz/files/file/40419219340.pdfIn PDF document text
  • https://pomtco.com/technical/files/file/lasisemigorufut.pdfIn PDF document text
  • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/179ae7c4272f55ff6d9fd046ce5f9462/dasesu.pdfIn PDF document text
  • https://nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/tosutuzuke.pdfIn PDF document text
  • http://lnianemarzenie.pl/userfiles/file/72858021254.pdfIn PDF document text
  • http://fabriquetextil.com/js/new/fckeditor/userfiles/file/repebexawun.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=poem+about+globalizationPDF link annotation
  • 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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