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
• 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 https://ht-cooling-j3t.com/contents/files/37718133299.pdf In PDF document text

  • http://aihyang.com/userfiles/file/52477325706.pdfIn PDF document text
  • https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/27394297560.pdfIn PDF document text
  • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137be81d19de---52525663159.pdfIn PDF document text
  • http://studioingegneriavaragnolo.com/userfiles/files/46388024267.pdfIn PDF document text
  • https://nic-irq.com/userfiles/files/94298340576.pdfIn PDF document text
  • http://barefoot.pl/userfiles/file/bokorif.pdfIn PDF document text
  • http://conelser.hu/fck_uploads/file/nuxisadoragakiji.pdfIn PDF document text
  • http://ageofwonders.buka.ru/sadm_files/rakinofaxuzifan.pdfIn PDF document text
  • https://holyfamilyhospitals.com/ckfinder/userfiles/files/66364831175.pdfIn PDF document text
  • http://pathtojanna.com/userfiles/files/newepesoropet.pdfIn PDF document text
  • http://zeshengtecphar.com/UploadFiles/FCKeditor/20210914005840.pdfIn PDF document text
  • http://arunimaflavours.com/userfiles/file/97347950504.pdfIn PDF document text
  • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a207f4a470---4333711967.pdfIn PDF document text
  • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/16130ee38c671f---berebelobaza.pdfIn PDF document text
  • http://www.prieteniitehnicii.ro/documente/file/11945156621.pdfIn PDF document text
  • https://www.theoakshealthcare.com/my_content/js/ckfinder/userfiles/files/kikuvefuredelolakugevob.pdfIn PDF document text
  • http://zonweringbelgie.com/ckfinder/userfiles/files/62118420763.pdfIn PDF document text
  • http://brenderup.ro/mm/file/tupojezapozojedozivot.pdfIn PDF document text
  • https://optimuselearningschool.aels.edu/learning/site/images/uploadfiles/11494994443.pdfIn PDF document text
  • http://travelspace.pl/userfiles/file/13478457055.pdfIn PDF document text
  • https://sieuviet.net/webroot/img/files/50791250001.pdfIn PDF document text
  • http://school19-zav.ru/userfiles/file/8896832318.pdfIn PDF document text
  • http://apluskleaning.com/admin/images/file/5896576277.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=jin+jin+jin+casino+mod+apkPDF 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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