Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• 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 https://cructi.ru/uplcv?utm_term=hsk+1+vocabulary+list+pdf+download PDF link annotation

  • https://qfuse.it/images/uploaded_files/ckfinder/files/1629658915_75d62c9284.pdfIn PDF document text
  • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133034c8d1ea---84425002772.pdfIn PDF document text
  • http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/68263418609.pdfIn PDF document text
  • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/447d534a1ec7bf79bbcb741013e9813e/lujatepowazimuxitelekotef.pdfIn PDF document text
  • http://gdlianyu.com/uploadfiles/file/12648711912.pdfIn PDF document text
  • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/78995019404.pdfIn PDF document text
  • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/e884549208e73fae4cee496852a90ee9/30448949664.pdfIn PDF document text
  • http://alimentosldm.com/userfiles/file/14871372157.pdfIn PDF document text
  • https://amoslodge10.org/ckfinder/userfiles/files/19044599041.pdfIn PDF document text
  • http://richmore.kr/uploadfile/fckeditor/file/gobokoxeludebasefogimox.pdfIn PDF document text
  • http://xz-brand.com/ckfinder/userfiles/files/vorubukefawetutumuton.pdfIn PDF document text
  • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/8ddfe28d618b3636c7581acd9d4c9f9d/mogebetog.pdfIn PDF document text
  • https://cornerstonelaw.eu/userfiles//file/sarixigo.pdfIn PDF document text
  • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/c53a11e543fd2a56b1a0485c2b3af492/visef.pdfIn PDF document text
  • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ebb4f418f5f720b955542049e76fa2b0/53246003371.pdfIn PDF document text
  • http://yuemeism.com/uploadfiles/files/65941686462.pdfIn PDF document text
  • http://noxsun.com/jingkelun/userfiles/files/20210628024330.pdfIn PDF document text
  • http://beiwendq.com//data/attachment/file/81732807414.pdfIn PDF document text
  • http://medtravel.pro/images/hand_uploaded/files/31513190498.pdfIn PDF document text
  • https://gastrotest.co/ckfinder/userfiles/files/37536472563.pdfIn PDF document text
  • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16087a0ad52e40---pelefagiwupak.pdfIn PDF document text
  • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612a547471ac7---zosanif.pdfIn PDF document text
  • https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/xiruwezop.pdfIn PDF document text
  • http://meble-tk.pl/userfiles/file/58663075630.pdfIn PDF document text
  • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160905d1cbc6da---5405765545.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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