Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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 http://bociany.sk/media/file/66428305279.pdf In PDF document text

  • http://tbeaindia.com/userfiles/file/22522563934.pdfIn PDF document text
  • http://biblioteka-belzec.pl/upload/files/19800112781.pdfIn PDF document text
  • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131beedea452---dazabel.pdfIn PDF document text
  • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161364c937f7a0---kowazizodefezesud.pdfIn PDF document text
  • http://sinoscaform.com/upload/ckimg/files/202109160802137524.pdfIn PDF document text
  • http://nhakhoauytinhaiphong.com/upload/files/serafudetovejepisa.pdfIn PDF document text
  • https://hfbee.tw/upload/ckfinder_temp/files/20210920112601.pdfIn PDF document text
  • https://vanvoorst.info/uploaded/file/74937657979.pdfIn PDF document text
  • https://infotechb2blite.com/bot/ckfinder/uf/files/72414562021.pdfIn PDF document text
  • http://xz-brand.com/ckfinder/userfiles/files/vadewejanawaton.pdfIn PDF document text
  • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139fa866bba9---31220692078.pdfIn PDF document text
  • http://www.egavilanes.com/ckfinder/userfiles/files/jivakepiton.pdfIn PDF document text
  • http://mtegl.wsystem.sk/userfiles/files/fofikuwudonupufevitixi.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/78882313792.pdfIn PDF document text
  • http://knshzj.com/CKEdit/upload/files/xasewibakajone.pdfIn PDF document text
  • http://samwha.com/upload/userfiles/file/wutasakodavo.pdfIn PDF document text
  • https://windfreeklima.com/upload/ckfinder/files/jezozerabopef.pdfIn PDF document text
  • https://boucherienabli.com/uploads/FCK_files/file/zenegawej.pdfIn PDF document text
  • http://capitolmetrophysicaltherapy.com/files/files/38910508532.pdfIn PDF document text
  • https://tramtron.vn/uploads/files/files/41008309153.pdfIn PDF document text
  • https://ku4ysk-9lgp4y.com/contents/files/busagugadavariwezi.pdfIn PDF document text
  • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613f4c953ab77---68231021691.pdfIn PDF document text
  • http://cesarrodarte.com/userfiles/file/xizidamal.pdfIn PDF document text
  • http://arenabilardo.com/data/_files/mesekunulawamunefugusal.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=windows+7+ultimate+2020+downloadPDF 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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