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://nomylo.ru/uplcv?utm_term=dictado+de+palabras+6+primaria PDF link annotation

  • https://bnbcostaverde.it/userfiles/file/19028383719.pdfIn PDF document text
  • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/234a2erbe01q6rfclkmb286p87/23423719871.pdfIn PDF document text
  • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcd81e3359---kanibagunivaxadavotumuwig.pdfIn PDF document text
  • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/5otquogro8sdaojkt6smd0miu6/nerolexelezor.pdfIn PDF document text
  • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/0tc8u1e71o8mn0fat6qdhuiee0/zuvipuzama.pdfIn PDF document text
  • https://divinesacredshakti.com/wp-content/plugins/super-forms/uploads/php/files/ed1725e4196a692badc453b170afb334/10051740935.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160874401a53b7---kepivekizab.pdfIn PDF document text
  • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e82d75f28a---pomevalibodarojela.pdfIn PDF document text
  • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a8dc270fec9---73983169967.pdfIn PDF document text
  • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/03d2b134c7c40c6708d8dc2d8471c51d/75323612415.pdfIn PDF document text
  • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/5fl5fkqtuqhp54opointvfqkvp/maperoxosujipiwezu.pdfIn PDF document text
  • http://cucthongke.vn/userfiles/file/%5C/51150674582.pdfIn PDF document text
  • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/1606cec732c2cf---9843831619.pdfIn PDF document text
  • http://baaningdoi.com/file_media/file_image/file/gokojufugutumivugiwidugo.pdfIn PDF document text
  • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098323c8133f---90500980616.pdfIn PDF document text
  • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16077b21130962---2632286591.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text

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