Malicious PDF — malware analysis report

Static analysis result for SHA-256 4252f359ba56ec5c…

MALICIOUS

PDF

83.2 KB Created: 2021-09-17 23:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: a7c71993e444ea0747419fa9b733ef68 SHA-1: 97604f052972f51c047f0cb84e8248e35548117e SHA-256: 4252f359ba56ec5c4e56c52bdfe4f3f16cda17faadc6504e3252404a10560c71
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://medvor.ru/uplcv?utm_term=hack+android+device PDF link annotation
    • http://banghetretunhien.com/media/ftp/file/8487776936.pdfIn PDF document text
    • https://emmaushuis.org/pages/95123970134.pdfIn PDF document text
    • https://artbynela.com/uploads/file/fafulafujum.pdfIn PDF document text
    • http://www.plain-pied.com/editeur/ckfinder/userfiles/files/sosedaxi.pdfIn PDF document text
    • http://jinyudachem.com/upload/files/zigiwanu.pdfIn PDF document text
    • https://perfecthospital.net/FCKeditor/file/vipinegaletotovozoluserul.pdfIn PDF document text
    • http://autoservizimensi.it/images/fck/file/wowuzimarubo.pdfIn PDF document text
    • http://hoinhikhoavn.com/img/files/92581262246.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/userfiles/file/jokeweloko.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16140b034ad5a6---kowikugono.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/wajerobixigowuwada.pdfIn PDF document text
    • https://ncvpte.in/userfiles/file/jatemedurofebefagejunos.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb3df81765---40538246130.pdfIn PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/74482295261.pdfIn PDF document text
    • http://botaierpharm.com/upload/files/92577558711.pdfIn PDF document text
    • http://se-ty.ru/uploads/userfiles/file/13229957357.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1B 18496 bytes
SHA-256: 076031fa44989bfea77ac497d15135414f90c9d0d7858dc35afe9dc0acc8177f
font_01_sfnt_off00010fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA8 10200 bytes
SHA-256: e9bc42affcdba4a67972a0146070d18cca19768106472359fbf877aa24cd7a85
font_02_sfnt_off00012697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12697 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1