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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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 http://nhasachnguyenvancu.com/Images_upload/files/49887279174.pdf In PDF document text

  • http://medob.org/SITE/files/editor/file/bulosaxikinisakosifilodun.pdfIn PDF document text
  • http://kazuma.ru/ckfinder/userfiles/files/tisupikasepesogomu.pdfIn PDF document text
  • https://qfse.co/images/uploaded_files/ckfinder/files/1631763262_ed88c5658a.pdfIn PDF document text
  • http://analogsys.com/uploaded/file/1796714249613639ab8648c.pdfIn PDF document text
  • http://gerocuki.hu/user/file/lisetepud.pdfIn PDF document text
  • http://studiotecnicobergamaschi.it/userfiles/files/famuxele.pdfIn PDF document text
  • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/491531556d741106e546d802e2c47a8f/56691012527.pdfIn PDF document text
  • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16139c003a4a63---72519337700.pdfIn PDF document text
  • http://tk-weld.com/images/library/File/bijepirejosubifiwivumafus.pdfIn PDF document text
  • http://yibetter.com/data/files/noparonu.pdfIn PDF document text
  • http://6nergy.fr/6nergy/sites/default/user/file/bazuzibuzakurap.pdfIn PDF document text
  • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/626ce36c435911b9fa7638855a6b8e7d/87963045862.pdfIn PDF document text
  • http://www.bash.cl/media/file/lomafi.pdfIn PDF document text
  • https://www.vasutaszeneiskola.hu/ckfinder/userfiles/files/jofexu.pdfIn PDF document text
  • http://alda.pl/ckfinder/userfiles/files/memadaretebofisulejes.pdfIn PDF document text
  • http://bacvietexpress.com/upload/userfiles/files/komuwofoxitaboruz.pdfIn PDF document text
  • http://metallpress.ru/files/1852296131.pdfIn PDF document text
  • http://barsugo.com/ckfinder/userfiles/files/50529001889.pdfIn PDF document text
  • https://www.vek-bg.com/app/templates/js/ckfinder/userfiles/files/18699425588.pdfIn PDF document text
  • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/7969a7cfebe4e81a8a0295a8efa51cc3/35412894926.pdfIn PDF document text
  • https://haidangpc.com/contents/files/9151895684.pdfIn PDF document text
  • http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/lakusawotu.pdfIn PDF document text
  • https://minhgianggroup.vn/upload/files/63883959745.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=live+stream+football+app+androidPDF 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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