Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc8e4fe3cc7fae17…

MALICIOUS

PDF

36.6 KB Created: 2021-05-10 18:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2399b4eccbf732ffcde94a5918a24c48 SHA-1: 87f235974f68555006239f260d77521a48558042 SHA-256: dc8e4fe3cc7fae17f6c0d270b100d4f07075240f18acb00ef364f2ccb7389ba7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a 'free generator / game hack' which links to known malicious redirector infrastructure. The embedded URL, https://netcdn.xyz/app/431946152/how-to-get-roblox-premium-for-free-2021-game-hack, is identified as malicious. The document body also contains text related to the lure and a call-to-action button, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0292

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/how-to-get-roblox-premium-for-free-2021-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
stream_003_off00003145.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3145 25768 bytes
SHA-256: 31a427674caa31d9b0a88e7f0ab0814f9750651f8c4a1722971f7fc153c37c28
font_01_sfnt_off00006aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAC 19292 bytes
SHA-256: f40355f8d73764334de65774b58428be6642d496c7c5bf19d3a36d7b89996382