Malicious PDF — malware analysis report

Heuristics 7

• 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 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.
• 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://oniceh.ru/uplcv?utm_term=addition+subtraction+and+multiplication+worksheets+for+grade+3 PDF link annotation

  • http://www.rajpuc.pl/pics/file/63978151841.pdfIn PDF document text
  • http://sanzmendia.com/userfiles/files/37896899236.pdfIn PDF document text
  • http://bwlpsalisbury.com/uploads/files/44314488848.pdfIn PDF document text
  • http://bielle-srl.com/userfiles/files/venunikokuzumixosi.pdfIn PDF document text
  • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bd10d7aac84---gukonururavotajadako.pdfIn PDF document text
  • http://crosswaysrecruitment.com/userfiles/file/52012916003.pdfIn PDF document text
  • https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/buxidob.pdfIn PDF document text
  • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/mg75m2rd6dmkgjgglbd4k3jrgh/kozew.pdfIn PDF document text
  • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/9f2cee840cec9138e772e48c47af6b78/7824322967.pdfIn PDF document text
  • http://weilandensemble.nl/ckfinder/userfiles/files/falugumotulikuxa.pdfIn PDF document text
  • http://fourfoods.com/images/files/kolevilo.pdfIn PDF document text
  • https://angelsforwarriors.org/userfiles/files/472195215.pdfIn PDF document text
  • https://www.ndgai.com/wp-content/plugins/super-forms/uploads/php/files/8m6krqk3fg3pmqoi6udbkq7kt6/98563340782.pdfIn PDF document text
  • http://walkofagesvt.org/clients/0/0e/0e42319052772b195a43ba3ede0f03e0/File/xetabogoninonadixovofuxe.pdfIn PDF document text
  • http://sieuthikhoacaocap.vn/upload/files/44271311734.pdfIn PDF document text
  • http://z-i-f.ru/userfiles/file/83955294755.pdfIn PDF document text
  • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160751589a0847---zafaleb.pdfIn PDF document text
  • http://022-web.cn/uploadfile/file/20210823165447903.pdfIn PDF document text
  • https://puppometalli.eu/file/68111119288.pdfIn PDF document text
  • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6a65e4b56---21562962037.pdfIn PDF document text
  • http://jkohut.pl/file/somiludavubolimazufetuvi.pdfIn PDF document text
  • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073e52b8ee56---42914601610.pdfIn PDF document text
  • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/87mve3gragi4svv58jjpvob834/11445596537.pdfIn PDF document text
  • https://parklanehotel.asia/userfiles/file/78397217751.pdfIn PDF document text
  • http://speakingaboutnetworking.com/ckfinder/userfiles/files/lokibevowebuzetugu.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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