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://ketchas.ru/uplcv?utm_term=how+to+write+user+acceptance+testing PDF link annotation

  • http://snsi.jp/image/news_file/79817848579.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160965160c9c22---58459202887.pdfIn PDF document text
  • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea875362a5---resifofiritobuguzetovojor.pdfIn PDF document text
  • http://coiffurenais.com/userfiles/file/lufav.pdfIn PDF document text
  • https://boyanbolyarski.com/userfiles/file/72654927811.pdfIn PDF document text
  • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a6c676f2b---60465945444.pdfIn PDF document text
  • http://dobre-jaja.com/Upload/file/denonajoririwuwu.pdfIn PDF document text
  • http://mediaworld.pro/ckfinder/userfiles/files/62185273302.pdfIn PDF document text
  • http://mynigaoe.com/upload/file/20210509055909.pdfIn PDF document text
  • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/6aa6633236c9e51e767b1d3f50a44533/fadigu.pdfIn PDF document text
  • https://yz-yongzhong.com/upfiles/editor/files/luwaka.pdfIn PDF document text
  • https://clubkdo.fr/img/pics/files/bariwofoponaxisivog.pdfIn PDF document text
  • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e047de06bb---zufutememokusesaweweko.pdfIn PDF document text
  • http://mmbc.cz/_data/user_files/file/tubefodumezitema.pdfIn PDF document text
  • http://cosmoscm.com/contents//files/ponikezozaxupurozala.pdfIn PDF document text
  • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160adcd80e6021---18472474530.pdfIn PDF document text
  • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9e0872050---34670286758.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/6n9picosmqg4o2h3qsvbku7kc7/38667581595.pdfIn PDF document text
  • http://alkanboya.com/files/file///32184293648.pdfIn PDF document text
  • http://bajcsidavidfoto.com/_user/file/17608103476.pdfIn PDF document text
  • http://richmediahouse.com/admin/uploads/file/vetoranetatatixodudu.pdfIn PDF document text
  • https://congchunghadong.com/uploads/files/92055568593.pdfIn PDF document text
  • http://wardwrightself.com/clients/863644/File/8914485431.pdfIn PDF document text
  • http://ongnuocdenhat.com/upload/files/30357227364.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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