Malicious PDF — malware analysis report

Static analysis result for SHA-256 b33ddeedd0c920c7…

MALICIOUS

PDF

36.7 KB Created: 2021-05-20 13:34:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c0753e7974415858c3b71faf2831e60b SHA-1: 8b960d80a5342d5f50869e112c1ea1df3ad6900c SHA-256: b33ddeedd0c920c78cbb8a72abc00e71241becba44584124ae2feb04acc99ba1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting 'game hacks' and 'free spins' for popular games. The document body and heuristics indicate a lure to trick users into clicking these links, which likely lead to further malicious content or malware downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/406889139/coin-master-free-spins-link-today-instagram-game-hack In PDF document text
    • http://santeh-40.ru/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-roblox-glasses_GM431946152.pdfIn 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_002_off00003393.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3393 24660 bytes
SHA-256: 41237c0a5a220e6c84de2e54a94b48d04358fa735172e45bc3ee394599a70a0f
font_01_sfnt_off00006c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C34 18960 bytes
SHA-256: c3cae131f36bdfe9c813bd150295f39ca0ceeabf3546a2df254cc03f93d9c6e3

Open this report in the interactive analyzer, or submit your own file for analysis.