Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9935f36a5cd47de…

MALICIOUS

PDF

80.9 KB Created: 2021-09-09 03:15:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 3773bf6d407e718eb98d7bef05c010ab SHA-1: 94ba83502b81d6b5ae6569e0dd4fe644dc0fb569 SHA-256: f9935f36a5cd47deea51d70f0079db0b688e8fab8842ccdbaa562329aacac26a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://chcial.ru/uplcv?utm_term=english+tenses+worksheet PDF link annotation
    • http://ceroki.com/image/files/91137873630.pdfIn PDF document text
    • http://dorinhawear.com/admin/fckeditor/editor/filemanager/connectors/php/fckeditor/editor/filemanager/connectors/php/userfiles/file/38531180452.pdfIn PDF document text
    • https://signos.larrialdiak.es/files/galeria/files/76175012446.pdfIn PDF document text
    • http://pozitron-s.ru/userfiles/file/1274886308.pdfIn PDF document text
    • http://hysansam.com/fckeditor/userfiles/image/gisipegizokule.pdfIn PDF document text
    • http://holzbau-napetschnig.at/belizugatufawanupuko.pdfIn PDF document text
    • http://zoncmswebsitebeheer.nl/files/editor/file/tarekugujidotavid.pdfIn PDF document text
    • http://express-service-auto.fr/ckeditor/ckfinder/userfiles/files/gofonexof.pdfIn PDF document text
    • http://xinshifm.com/userfiles/file/69252115634.pdfIn PDF document text
    • https://tunguoilon.tunhua.vn/ipp/images/uploads/files/90979922452.pdfIn PDF document text
    • http://htwy.com/upload/file/45799316479.pdfIn PDF document text
    • http://ckm-machinery.com/userfiles/files/92635441222.pdfIn PDF document text
    • http://royalwedding.jp/images/blog/file/67383719742.pdfIn PDF document text
    • https://mamap.in/ci/userfiles/files/damaxemuvojinijuti.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/wanutokilolonuti.pdfIn PDF document text
    • http://cl-pub.com/files/files/xikolumixu.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161357cee39e24---godojetugarebalevuvumivog.pdfIn PDF document text
    • https://adminico.nl/userfiles/file/81257638412.pdfIn PDF document text
    • http://esteel.my/userfiles/file/41663898660.pdfIn PDF document text
    • https://www.hosotte.com/ckfinder/userfiles/files/ledujeduzibusobow.pdfIn PDF document text
    • https://leganordavigliana.it/uploads/file/99018601176.pdfIn PDF document text
    • http://banquat.com/userfiles/files/77789620899.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/e2316c9a7fc713977463ebf498d4d254/figaravivo.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_off0000d6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DA 10384 bytes
SHA-256: edfe6b9e235434abcc61db7c9d5e54ed43dd98f266951107a40ab6c38089b785
font_01_sfnt_off0000ee50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE50 18272 bytes
SHA-256: 70b6334d03e93f5b8cd515b15907341f1f3d8d0150f88613027a4508d62f4cde
font_02_sfnt_off00011df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DF1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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