Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3c8431fff15737…

MALICIOUS

PDF

85.6 KB Created: 2021-12-08 06:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-16
MD5: dcc5e0deeba8ea54cbb7453f41877d06 SHA-1: e96cbbd4841a7e001f0844de9e057948ac99143c SHA-256: 5d3c8431fff15737ef264dded6ebe80c779ff17a01afaaef3c4ad8c61fa27a5f
74 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0006

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=123&isbn=9780813141596&kwd=Hoax%20:%20Hitlers%20Diaries,%20Lincolns%20Assassins,%20and%20Other%20Famous%20Frauds PDF link annotation
    • https://static.s123-cdn.com/uploads/4660128/normal_61af8a64048dc.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off0000f6fa.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FA 21780 bytes
SHA-256: 724dbc8ebe298597347fceb46cc2172f51fe2313a76a750440a490328b49f862
font_01_sfnt_off000129ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129AB 19664 bytes
SHA-256: da41c01007efff689a051f93f13e4025822f3467b03bbf7cfc5ded6bb43daa65