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
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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.
• 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://coretry.ru/uplcv?utm_term=free+robux+hacks+2021 PDF link annotation

  • https://www.tulsarad.com/my_content/js/ckfinder/userfiles/files/japatokejirugo.pdfIn PDF document text
  • http://capitaloffice.pl/fotki/file/boxatiwokepijolunopuradol.pdfIn PDF document text
  • http://ex2010.com/uploadfile/file/2021092619341973499.pdfIn PDF document text
  • http://sirinthepgroup.com/userfiles/file/xidoku.pdfIn PDF document text
  • http://cuanhuaabshanquoc.vn/files/babamilepatinulabonot.pdfIn PDF document text
  • http://de.ruben.pl/ckfinder/userfiles/files/9315363343.pdfIn PDF document text
  • http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/46573268677.pdfIn PDF document text
  • http://administratieindex.nl/images/uploads/60972157345.pdfIn PDF document text
  • https://otterdisplay.com/userfiles/file/50221070631.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161310857e6801---1588455193.pdfIn PDF document text
  • https://asiahealthcaredentalcentre.com/ckfinder/userfiles/files/zotenonagotakapi.pdfIn PDF document text
  • http://ambulatorioveterinariorigolon.eu/userfiles/files/74723904270.pdfIn PDF document text
  • https://sieuthimaytinhcu.vn/upload/files/99013259706.pdfIn PDF document text
  • https://buzascsaba.hu/userFiles/file/dilubeba.pdfIn PDF document text
  • http://www.firstpages.eu/app/webroot/files/userfiles/files/woxepezezeguve.pdfIn PDF document text
  • http://sunwisechem.com/Uploadfiles/files/famijodabikitoxa.pdfIn PDF document text
  • http://stacjaregeneracja.pl/userfiles/file/76040467013.pdfIn PDF document text
  • http://nato-denkmal.de/uploads/file/61655211205.pdfIn PDF document text
  • https://birutelorasin.com/contents/files/nuzabak.pdfIn PDF document text
  • http://www.ondebiz.com/userfiles/file/23612543279.pdfIn PDF document text
  • http://uralcomservis.ru/crn_fls/crn_files/newonobiniwurub.pdfIn PDF document text
  • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161348d0d1cdb1---zevasoxupu.pdfIn PDF document text
  • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16131a1bbc82f6---bekuzomifojini.pdfIn PDF document text
  • http://cn-biyoute.com/d/files/jipuwul.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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