Malicious PDF — malware analysis report

Static analysis result for SHA-256 e50b7420bc33ebd8…

MALICIOUS

PDF

35.8 KB Created: 2021-05-19 02:36:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0f2d20830a3c12e1ca4fc611c32c616b SHA-1: 946a8395c4a0741ced6d4f71d32361bc86522b6e SHA-256: e50b7420bc33ebd8fb19585bc56ee11044071851548e740a0ff0c91d8ad016f6
170 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating a malicious redirector lure, specifically referencing a 'TikTok I Feel Kinda Free Song Game Hack'. The primary malicious URL, https://netcdn.xyz/app/835599320/tiktok-i-feel-kinda-free-song-game-hack, is linked to by the document and is flagged as malicious infrastructure. The document also contains a call-to-action to 'CLICK HERE TO ACCESS TIKTOK GENERATOR', reinforcing the social engineering aspect to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/835599320/tiktok-i-feel-kinda-free-song-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_off000030dc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30DC 25148 bytes
SHA-256: 8971dabc3357a27dac43698f7a18aa868097a6d28ee2e254f839083b69198335
font_01_sfnt_off00006a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A85 18220 bytes
SHA-256: db93bc6c32f2b795e559c1a25efd3e5b5cba881dce60d8959115d3c2c7ee626d