Malicious PDF — malware analysis report

Static analysis result for SHA-256 4254329da8860d5a…

MALICIOUS

PDF

74.4 KB Created: 2021-10-10 02:18:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: f1b862e8edeae796655859f3087aad9d SHA-1: f974b1931c4c9251f655e9db6ba455d006913049 SHA-256: 4254329da8860d5ab082d244c1fc19e062cc88c99ded6c87b050ccf5ec656d10
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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 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://xosobacninh.vn/webroot/img/files/dulujekoriz.pdf In PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff443083a2---nevibufaref.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/bi03lpuopsekf6akd863k2jfk0/gepodaxukojofonopebimovin.pdfIn PDF document text
    • http://pastadimatteo.com/ckfinder/userfiles/files/96452068989.pdfIn PDF document text
    • http://orderleesushi.com/uploads/files/rokamaxusupebukajibiraju.pdfIn PDF document text
    • http://aalzkj.love-mrt.com/upload/files/vekadozefu.pdfIn PDF document text
    • https://jaukiaplinka.lt/ckfinder/userfiles/files/mulopofewupatojodakalupuz.pdfIn PDF document text
    • http://sxnqx.org/upload/file/Fl202109062026143989.pdfIn PDF document text
    • http://abwlargo.com/uploads/files/4980185136.pdfIn PDF document text
    • http://bdsductri.com/upload/files/61215658104.pdfIn PDF document text
    • http://canhtoanland.com/upload/files/rivokenilunapafuxif.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/68a891e94a98ac508666aabc400739c7/82499172960.pdfIn PDF document text
    • http://ubytovna-krumlov.cz/userfiles/file/fukegubowumamimenopirib.pdfIn PDF document text
    • http://geometrarontani.it/userfiles/files/50466862351.pdfIn PDF document text
    • http://servicedental.it/userfiles/files/56768520.pdfIn PDF document text
    • https://vatlieutaphu.com/upload/files/35812468822.pdfIn PDF document text
    • http://ipllaser.in/uploads/94022338254.pdfIn PDF document text
    • http://nhatrangpalacehotel.com/app/webroot/upload/files/8213980470.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614300bb63ac8---75793339693.pdfIn PDF document text
    • http://piri-piri.pl/ckfinder/userfiles/files/wexuti.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/84805986679.pdfIn PDF document text
    • http://www.nbc.com.vn/ckfinder/userfiles/files/pibuvemopiputenupizo.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1614d36939c39f---konejifafipi.pdfIn PDF document text
    • http://belstroyiz.ru/img/file/54235089085.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16132595228fb4---zamarerisumex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=bars+and+melody+america%27s+got+talentPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD04 10916 bytes
SHA-256: 8361740a6620456a9d4925bca8cee26fe8dbbab87bc23bdccf1cd0a918a2b830
font_01_sfnt_off0000d627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD627 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ee39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE39 17540 bytes
SHA-256: c5f6d43b38d3db63859a844c0f3449e957543d48defd8c4db8a19ca1d4a20df3