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://infrive.ru/uplcv?utm_term=old+dog+ale+house PDF link annotation

  • http://curry-box-deluxe.de/userfiles/file/987236049.pdfIn PDF document text
  • https://www.q-jin.ne.jp/ckfinder/userfiles/files/92688274014.pdfIn PDF document text
  • http://bahtiyardishekimi.com/fckfiles/file/65137711769.pdfIn PDF document text
  • http://nesthomes.in/userfiles/file/gezedorosem.pdfIn PDF document text
  • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a855aa9b66d---89884557888.pdfIn PDF document text
  • http://indianspringhomes.net/userfiles/files/fuwenamorizufi.pdfIn PDF document text
  • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/604b50f62b5871db5889eddbe6959159/36358075665.pdfIn PDF document text
  • http://aviatechinform.ru/sadm_files/91585568727.pdfIn PDF document text
  • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/np2k4k65t67vntkc1339no2g0b/legedezavijilekejese.pdfIn PDF document text
  • http://sghscsjamarai.org/guruhargobind/userfiles/file/vabiwafoxu.pdfIn PDF document text
  • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/837c0b0fd5e4bafab99cb6d35f92be1f/42097958037.pdfIn PDF document text
  • https://speeddating.lt/speeddating/ckfinder/userfiles/files/10333333281.pdfIn PDF document text
  • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff52f651b19---35697210769.pdfIn PDF document text
  • https://nabsangram.com/userfiles/file/84829032526.pdfIn PDF document text
  • https://hyosungulf.com/uploads/file/surepativuwuxewinudokon.pdfIn PDF document text
  • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1610d696fa7128---sazajewapupejidabutimuf.pdfIn PDF document text
  • http://jpind.pl/userfiles/file/merulabefuvew.pdfIn PDF document text
  • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160afb16dc2a7a---71848902703.pdfIn PDF document text
  • https://businessservicesuk.com/userfiles/file/wozekegemidusoki.pdfIn PDF document text
  • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098528165820---79065460817.pdfIn PDF document text
  • http://secondhandgraphics.com/usrfiles/file/gutuzomepesav.pdfIn PDF document text
  • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16076aba984244---25113061926.pdfIn PDF document text
  • http://unipsyclinic.com/userfiles/file/20210510081240.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/cccg19mt1a1dahjavr4o7s3o54/70547165022.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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