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
• ClickFix social engineering attack high SE_CLICKFIX
  Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
• Security software disable instruction high SE_SECURITY_BYPASS
  Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
• 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://catamma.ru/uplcv?utm_term=how+to+stop+auto+update+in+win+10 PDF link annotation

  • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd61d9973f---50094343824.pdfIn PDF document text
  • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/c0edb6f0f3408d0c84963b915d520413/74221222253.pdfIn PDF document text
  • http://nacyc.jp/Upload/file/70413075847.pdfIn PDF document text
  • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/cb48a6e7a92ba3f00c58b56e58107f92/97118026624.pdfIn PDF document text
  • http://happinessgown.com/upload/users/files/18529401981.pdfIn PDF document text
  • https://congthuonghotel.vn/app/webroot/files/images/pages/files/32174295304.pdfIn PDF document text
  • http://bethelhanberryaaa.com/clients/2/24/2465ef4bb9bb1b7382310ae17d7cafeb/File/gibaberegesu.pdfIn PDF document text
  • http://burfel.ru/upfiles/files/56362023443.pdfIn PDF document text
  • http://karat-dobremiasto.pl/userfiles/file/38811231091.pdfIn PDF document text
  • https://maconlux.lu/userfiles/files/70841325053.pdfIn PDF document text
  • http://www.allatpatikapecs.hu/images/file/toligitogobirupitetiw.pdfIn PDF document text
  • https://adepotcustom.com/UploadFiles/file/20210523015547162.pdfIn PDF document text
  • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/f9bd41f9eadfad46da9460795b6aa330/bodinixefuxanodomojepusin.pdfIn PDF document text
  • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160feece365007---97075637810.pdfIn PDF document text
  • http://hhcreunion.com/clients/4/43/43f38dc94a4d709fe78decf5bd9d7370/File/pubixatedolo.pdfIn PDF document text
  • http://bright-inter.com/file_media/file_image/file/lipuxafifeneke.pdfIn PDF document text
  • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160984a83a0435---wiberepasug.pdfIn PDF document text
  • http://blevy.com/ckfinder/userfiles/files/45491817257.pdfIn PDF document text
  • http://dekoblickfang.de/userfiles/file/tobaxewovenud.pdfIn PDF document text
  • http://eggtesting.com/admin/uploads/file/wuninodukonuwamebifevajaj.pdfIn PDF document text
  • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/161009c51860f2---91033728963.pdfIn PDF document text
  • https://jogamiskolc.hu/ckfinder/userfiles/files/potetironuboboz.pdfIn PDF document text
  • http://homespakistan.net/magzine/uploadfiles/file/9842667217.pdfIn PDF document text
  • http://anhuizpyy.com/upload_fck/file/2021-6-1/20210601235314731863.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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