Malicious PDF — malware analysis report

Static analysis result for SHA-256 974e5973fc99ed12…

MALICIOUS

PDF

20.0 KB Created: 2021-05-10 18:42:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cdb5756e9f1d181f66088492df18cf72 SHA-1: c7c9e6c53094aa7396a7f98db485332749f295f2 SHA-256: 974e5973fc99ed12734ee5aef9d11d94cfa9fd10d57703d53125d144a2f4c52d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack' to lure users. The embedded URL, https://netcdn.xyz/app/431946152/free-robux-no-survey-or-human-verification-game-hack, is associated with malicious redirector infrastructure. The document body reinforces this lure with phrases like 'Free Robux No Survey Or Human Verification' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR'.

Machine Learning

  • Nyx PDF Classifier clean score 0.0209

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/431946152/free-robux-no-survey-or-human-verification-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB51 15996 bytes
SHA-256: 780372387d403c64420e4bf783f51e313c2e3b0654ef71ee5e490f7a555716f1
font_01_sfnt_off000029a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29A4 19156 bytes
SHA-256: 740843b016d65d6d98e94234348adfc338e782053996300107113ffe61ddc4f5