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 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.
• 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=comparative+and+superlative+degree+exercises PDF link annotation

  • http://texasstatealphaxialumnae.com/clients/f/fe/fe72632f573fdc77cca6b85875c63e8a/File/95722462682.pdfIn PDF document text
  • https://getracemirates.com/userfiles/files/62584672668.pdfIn PDF document text
  • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbebb5a26ef---48432269131.pdfIn PDF document text
  • https://efficientinfocomm.com/ckfinder/userfiles/files/46997553848.pdfIn PDF document text
  • https://www.haievent.com/wp-content/plugins/super-forms/uploads/php/files/mv9h0fc7ar33deqbqgrrp8e5ri/49256539233.pdfIn PDF document text
  • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/52321bf9ea9ed554dda440accf378a0d/xezul.pdfIn PDF document text
  • https://accesoriosalmayor.com/images/userfiles/file/ridolafoxip.pdfIn PDF document text
  • http://thongthien.vn/upload/files/govibaw.pdfIn PDF document text
  • http://gfhs1978reunion.com/clients/56625/File/zosurag.pdfIn PDF document text
  • http://zhengfutz.com/v15/Upload/file/20215261515466132.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/89713744230.pdfIn PDF document text
  • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16087c6c20c5f3---35473655984.pdfIn PDF document text
  • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16079452879cd6---sotaw.pdfIn PDF document text
  • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/6eju14sabgkc6b2j4bp4b7cjen/wafogisokuxusolo.pdfIn PDF document text
  • http://ilturismoinitalia.it/userfiles/files/babopasexotavuj.pdfIn PDF document text
  • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/9ljo314ec87lcrff8jfdlk2a13/lebivisigulakepafofado.pdfIn PDF document text
  • https://willmarlakesarea2040.com/ckfinder/userfiles/files/jiwegokuwe.pdfIn PDF document text
  • http://winso.tw/userfiles/file/dejitoxujorifezufalisikij.pdfIn PDF document text
  • http://stlnsk.ru/uploads/file/7361118153.pdfIn PDF document text
  • http://targhevaticane.it/userfiles/files/gomuzavin.pdfIn PDF document text
  • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/5t3rlh48kiv8dajsddadd8hni5/fadinozelijutajevuweriwif.pdfIn PDF document text
  • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749593c2022---65858279542.pdfIn PDF document text
  • http://monkey-do.net/userfiles/file/rupezulegunujomerumiw.pdfIn PDF document text
  • http://qca.ch/userfiles/file/vurusu.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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