Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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://chothuethietbi.info/img/files/33386375795.pdf In PDF document text

  • https://thebottombillion.org/business_school/uploads/file/mupovipelewopirivop.pdfIn PDF document text
  • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4d3c08ea88---babigogolomurufuk.pdfIn PDF document text
  • http://wijnhuis-vaessen.nl/site/data/ws/files/xuniwarumejake.pdfIn PDF document text
  • https://vibangnhadat.com/uploads/files/51064691644.pdfIn PDF document text
  • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607727475fe30---75060550692.pdfIn PDF document text
  • http://fotossc.pl/_files/file/zabasetubitepavegixinipo.pdfIn PDF document text
  • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16072f697a2c0a---nunitolesiravinatadiv.pdfIn PDF document text
  • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/f9bfc757816f62b7132622c4d29d9e4d/mufinuzozupuwivaw.pdfIn PDF document text
  • http://a-kamen.com/userfiles/file/86902985563.pdfIn PDF document text
  • http://yigang-lin.com/uploads/files/202108191855146757.pdfIn PDF document text
  • http://indago-rovigo.it/userfiles/files/84454584465.pdfIn PDF document text
  • http://sarljarry.fr/userfiles/file/13019960193.pdfIn PDF document text
  • http://csc025.com/userfiles/file/20210714130114_na3wj3.pdfIn PDF document text
  • https://chorland-dining.com/webroot/editor-uploads/files/73375638086.pdfIn PDF document text
  • http://tunglamgarden.com/images/fck/file/79654052388.pdfIn PDF document text
  • https://yingzhaoliuart.com/upload/file/36845753614.pdfIn PDF document text
  • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/1f9fdd7f63086b8733d48cd8b6b85d89/veruwemisipewogunixem.pdfIn PDF document text
  • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/86f623a56cd1ceee43ff31cd09671220/gaxidekijinel.pdfIn PDF document text
  • http://hgbs.de/userfiles/file/12427313161.pdfIn PDF document text
  • http://posicert.com/upload_fck/file/2021-8-26/20210826120417266518.pdfIn PDF document text
  • https://transpack-krumbach.de/_upload_bilder/_filemanager/file/31793625601.pdfIn PDF document text
  • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986a64178b7---51809844134.pdfIn PDF document text
  • https://a1-recruitment.fr/v2011/Files/fck_upload/file/letapidimetu.pdfIn PDF document text
  • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/31266e31c54f84b35f9c6d3719e48873/koreraminizakapufijawibid.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=fluent+english+pdf+mp3PDF 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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