Malicious PDF — malware analysis report

Static analysis result for SHA-256 634cf02acc04e5ef…

MALICIOUS

PDF

75.1 KB Created: 2022-03-31 10:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: 3b039f0a04d20899a21b9f89b54b0d62 SHA-1: eb6085871be55bfcc28f95a4cbc0917591a7a440 SHA-256: 634cf02acc04e5ef3d93a08d7d23f1e42c7618d1062cff2535887223c8d382e4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://yubit.co.za/YmrXLWy8?keyword=jeet%20kune%20do%20workout PDF link annotation
    • http://www.guard.ee/kcfinder/upload/files/39997085230.pdfIn PDF document text
    • http://az-volnycas.cz/volnycas/fckphotos/file/zixizekezubigosawom.pdfIn PDF document text
    • http://greeninfrabd.com/assets/ckeditor/kcfinder/upload/files/13880344133.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/49229951079.pdfIn PDF document text
    • https://tidijesugeji.weebly.com/uploads/1/3/4/7/134764535/9b1800.pdfIn PDF document text
    • https://mai-avto.ru/upload_files/file/29142297564.pdfIn PDF document text
    • http://makesrealsense.com/ckfinder/userfiles/files/tiwazifosus.pdfIn PDF document text
    • https://ddtoyz.com/ckfinder/userfiles/files/wojebomuzi.pdfIn PDF document text
    • https://5050562.ru/artimg/files/35237465786.pdfIn PDF document text
    • https://mavuniwotikabu.weebly.com/uploads/1/3/4/3/134324734/38745.pdfIn PDF document text
    • https://tukibasitotaz.weebly.com/uploads/1/3/4/4/134445351/2c995dda0.pdfIn PDF document text
    • http://isped.net/kcfinder/upload/files/petofoxasiruro.pdfIn PDF document text
    • https://vazitaxigenot.weebly.com/uploads/1/3/4/6/134640409/tifajol-wuvideru-wejirurab-pupirarirota.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_off0000c646.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c646.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC646 10044 bytes
SHA-256: 20b949ed32674b7194cb4480d04fd9b88d24de42ee07a7f5f54b2ce8c04f0538
font_01_sfnt_off0000dcd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD2 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0000f371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF371 16596 bytes
SHA-256: d7ec63f6d55ecf5ce5363442d4888f6789d086842cb3805f06d4c3a34a777996