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
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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.
• Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
  PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
• 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.
• 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://zhizhencn.com/filespath/files/20211008063334.pdf In PDF document text

  • http://falconfam.com/ckfinder/userfiles/files/70413514064.pdfIn PDF document text
  • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/161be03c655b87---47417795274.pdfPDF link annotation
  • http://ocvitlucky.com/vietkiendo/upload/file/lemipulubavefibivena.pdfIn PDF document text
  • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a6ffad89be0---74170118539.pdfIn PDF document text
  • https://diamond-marketing.cz/soubory/49695551904.pdfIn PDF document text
  • http://teresachild.com/upload/files/73540617333.pdfIn PDF document text
  • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/9841535d13210bcabb682b40d3a4959d/jowuripujejuwerunoza.pdfIn PDF document text
  • http://virtuozi.ru/sites/all/sites/virtuozi.ru/files/24487329746.pdfIn PDF document text
  • http://baovethanglongmb.com/upload/files/95383108629.pdfIn PDF document text
  • https://krygina40.ru/UserFiles/File/xitopum.pdfIn PDF document text
  • http://klinok-saintp.ru/files/48188632857.pdfIn PDF document text
  • http://diadiemvui.com/upload/files/85067217452.pdfIn PDF document text
  • http://debseven.net/UserFiles/File/wumizapazotigidubovosu.pdfIn PDF document text
  • https://eastmanllc.com/ckfinder/userfiles/files/17371775684.pdfIn PDF document text
  • https://drsaman.com/files/73013217465.pdfIn PDF document text
  • http://matras-devison.ru/upload/file/82209733315.pdfIn PDF document text
  • http://kmkonsult.cz/userfiles/file/xikemaxowudujuju.pdfIn PDF document text
  • http://winso.tw/userfiles/file/gowakeruporiku.pdfIn PDF document text
  • https://vibangnhadat.com/uploads/files/serup.pdfIn PDF document text
  • https://snapstudios.ca/userfiles/file/12461120393.pdfIn PDF document text
  • http://ihdbd.org/upload/files/wikutixilaziruguvenipabu.pdfIn PDF document text
  • https://tfsroanoke.com/home/tfs/public_html/new/ckfinder/userfiles/files/34354839905.pdfIn PDF document text
  • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615170d20e3de---vewegoteni.pdfIn PDF document text
  • http://coimbra.hu/uploads/ckfinder/userfiles/files/26677138403.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Gsjc/~3/Z3ufxtS7Wvw/uplcv?utm_term=canon+mf3010+scan+softwarePDF 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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