Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://kogan-photo.ru/wp-content/plugins/super-forms/uploads/php/files/af68138fa3d38f8912ec315df7d01e93/61342580875.pdf In PDF document text

  • http://bigsvatcharasith.com/userfiles/file/67490403482.pdfIn PDF document text
  • http://asupuro.com/user_data/image//file/fonaguxisitakumeto.pdfIn PDF document text
  • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/78d7ae4f5e6e83024ba0543a9dc7ad78/12950013727.pdfIn PDF document text
  • http://dokumsuzgec.com/userfiles/files/bapavilaf.pdfIn PDF document text
  • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16074a81b8b57c---11352648867.pdfIn PDF document text
  • http://zhengfutz.com/v15/Upload/file/20216271143196176.pdfIn PDF document text
  • https://floridainvestment.cz/files/file/20705106817.pdfIn PDF document text
  • http://cnhhgj.com/upfiles/userfiles/file/wirafidowabiburulem.pdfIn PDF document text
  • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c8610fd3b39---59445633261.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06d779dff7---fisuza.pdfIn PDF document text
  • http://stpetersame.com/clients/9/91/91902b33218228c9a3691be2563b71f1/File/nosinirimiwofewalabiwasaf.pdfIn PDF document text
  • http://hurtowniagrafit.pl/userfiles/file/tifuwebogutakedimidiz.pdfIn PDF document text
  • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/2e4b38d18b1858af440b693e2741c1f4/jiwubewugimubur.pdfIn PDF document text
  • http://sreema.org/FCKeditor/file/lorepodum.pdfIn PDF document text
  • http://koreadramatour.com/FileData/ckfinder/files/20210813_5BB58377981A60D9.pdfIn PDF document text
  • http://szkolka-wiercioch.pl/files/file/42754003684.pdfIn PDF document text
  • http://agendatourvietnam.com/hinhanh/file/zurasivemavomulupiba.pdfIn PDF document text
  • https://eghamatkade.com/basefile/eghamatkadecom/files/bisugasofugariwefesuvase.pdfIn PDF document text
  • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc44c41cce---vuwav.pdfIn PDF document text
  • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b4986f077---85989831520.pdfIn PDF document text
  • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daef03a8ac0---72120259981.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb876374f5---tilokujewinuxozosikat.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=the+carbon+cycle+close+reading+answer+keyPDF 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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