Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f5425cc9a51a7e…

MALICIOUS

PDF

72.7 KB Created: 2022-04-25 20:41:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-19
MD5: c8eacf9e54a4b31bc6aef61dbc740461 SHA-1: 58e4801dc3513e66387be893d34be763893f0ddd SHA-256: 26f5425cc9a51a7e00951e4c0ce25768d22e131a472775a06de6511ffe63e6be
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://sunuf.co.za/YmrXLWy8?keyword=fundamentals%20of%20physics%20halliday%20and%20resnick%2010th%20edition%20solutions PDF link annotation
    • https://nabubane.weebly.com/uploads/1/3/6/0/136099933/54eb7c7a.pdfIn PDF document text
    • https://fekarerexenafot.weebly.com/uploads/1/3/4/6/134698220/1210670.pdfIn PDF document text
    • https://egca.fr/userfiles/file/zomitagoluw.pdfIn PDF document text
    • https://baglab.pl/galeria/file/wovadepipumux.pdfIn PDF document text
    • https://rewapukin.weebly.com/uploads/1/3/5/9/135961798/fewaromuxovus.pdfIn PDF document text
    • https://koxerefoluji.weebly.com/uploads/1/4/1/3/141394906/e774d6476ea60ef.pdfIn PDF document text
    • https://sonomuwozu.weebly.com/uploads/1/4/1/2/141257666/3554280.pdfIn PDF document text
    • http://www.mkfilm.it/ckeditor/kcfinder/upload/files/74165879008.pdfIn PDF document text
    • http://akademibt.com/resimler/files/maviforukafilupinu.pdfIn PDF document text
    • http://gumho.puruemi.com/userData/affis_board/file/vexemitigugofozujenok.pdfIn PDF document text
    • https://grandegroup.net/files/nojemanuvixivovazizevis.pdfIn PDF document text
    • https://rudorigafeba.weebly.com/uploads/1/3/4/8/134899211/gavuwanimetazana.pdfIn PDF document text
    • https://banetopebored.weebly.com/uploads/1/3/4/8/134874573/nikebo.pdfIn PDF document text
    • http://business-plan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/90854353507.pdfIn PDF document text
    • https://selenonapekab.weebly.com/uploads/1/4/1/3/141340645/8246475.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 extracted file (font_00_sfnt_off0000b6a6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b6a6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEBD 11340 bytes
SHA-256: 52636f0bff48d3c13e67494e89baa1b92c5aa3ff1ccf41ec5a73b24a8f240f17
font_02_sfnt_off0000e941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE941 16996 bytes
SHA-256: 9e4cc2b959520e987ed942e624dd2d4fb83b40f873618d02e970f65c5be35e5b