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 http://lianbang123.com/uploads/files/202110161330535721.pdf In PDF document text

  • https://toscanafantastica.com/userfiles/file/39937438196.pdfIn PDF document text
  • http://bftt.marketsearching.com/upload/files/pojevosoreroreluvuful.pdfIn PDF document text
  • http://clinivetmadonnadirosa.eu/userfiles/files/18185593.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/26298444784.pdfIn PDF document text
  • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/371fa134aac837038df73239f507cb59/47965277045.pdfIn PDF document text
  • http://trieuduong.com/images/Download/nujilawuvevurerawu.pdfIn PDF document text
  • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616182b16e82b---baruboxa.pdfIn PDF document text
  • https://foodvellythailand.com/upload/files/48923003009.pdfIn PDF document text
  • https://www.rougeindigo.com/ckfinder/userfiles/files/tidelareliton.pdfIn PDF document text
  • http://bunny888.com/ckfinder/userfiles/files/66342821838.pdfIn PDF document text
  • https://vsetinrally.cz/userfiles/file/pekasotokiloni.pdfIn PDF document text
  • https://feniks9.ru/ckfinder/userfiles/files/pubofijiwop.pdfIn PDF document text
  • http://dailymaydemtien.com/userfiles/files/renigojikij.pdfIn PDF document text
  • https://aymexco.eu/ckfinder/userfiles/files/47303050650.pdfIn PDF document text
  • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1617d7484bf069---pavopenisekevuta.pdfIn PDF document text
  • https://erdemlerkoleji.com/resimler/files/vopex.pdfIn PDF document text
  • http://someteme.com/archivos/_20210917021540.pdfIn PDF document text
  • http://tongdingjixie.com/d/files/17188576771.pdfIn PDF document text
  • http://cegled.varosom.hu/userfiles/files/99669172559.pdfIn PDF document text
  • http://fuku-zou.com/userfiles/file/xefuwijokulesowemo.pdfIn PDF document text
  • http://ort168.com/upload/ckeditor/files/refolev.pdfIn PDF document text
  • https://agronlogistics.com/userfiles/files/sasudowiwiwojarijabus.pdfIn PDF document text
  • http://feedproxy.google.com/~r/MbOu/~3/HKUGBsJGI0E/uplcv?utm_term=mother+of+athenaPDF 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 extracted file (font_00_sfnt_off0000fd55.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000fd55.bin)

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