Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a8881865794afc…

MALICIOUS

PDF

97.7 KB Created: 2021-12-11 13:11:27 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-07-03
MD5: b8c125ca0286813194daecc5ab0d3d60 SHA-1: 413acb36cbb124f13f1a0bc8d1eca02731f38da0 SHA-256: b9a8881865794afc41ff7d6054416cb017d0616e3d30f5c3d8d45e0680589a43
74 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0135

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
    PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://getpdf.pw/book?res=strik&isbn=9781887374293&kwd=Handbuilt%20Ceramics PDF link annotation
    • https://static.s123-cdn-static-c.com/uploads/4664521/normal_61b2882419f4a.pdfIn PDF document text
    • https://static.s123-cdn-static-b.com/uploads/4671819/normal_61b36255506e5.pdfIn PDF document text
    • https://static.s123-cdn-static-c.com/uploads/4663107/normal_61b2a15135192.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4662754/normal_61b334f5b6e66.pdfIn PDF document text
    • https://files8.webydo.com/9589309/UploadedFiles/F55F069A-A83A-2FA1-AE0A-F3B872F75328.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off000126ae.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000126ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126AE 21688 bytes
SHA-256: 3228a8d94bf8649b27bdda181a3d306ea23d1e4984a66652ec7754bd1970a155
font_01_sfnt_off000158c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158C6 19632 bytes
SHA-256: eeccc0ddbbda3410d961adbdee87cd37291dd2923a28a8bc65b292a8dbaa2edc