Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff30ff9991f011f4…

MALICIOUS

PDF

47.3 KB Created: 2021-06-02 15:42:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d8c681ec7f68db1c048c110adac76c6b SHA-1: 2f29f55e159fba94164c863c7420375781a19f54 SHA-256: ff30ff9991f011f41d5f92d1cb7565ec40a252266a5c984cac535c7c6941306f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to potentially malicious sites, masquerading as game hacks and free generators. The ML classifier also flagged this PDF as malicious. The presence of these links suggests an attempt to lure users to malicious infrastructure, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/safe-roblox-hack-sites-game-hack In PDF document text
    • http://m-sv.net/images/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/free-roebucks_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://m-sv.net/images/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005174.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5174 25288 bytes
SHA-256: 0e51ec371c42a366910f14ce0c028a684d2f2694f46a5e84c2becb4b9b520531
font_01_sfnt_off00008bbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBC 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off000095cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95CB 18408 bytes
SHA-256: fcceac0a61c7b469f282fad21ecbf4697f2d6515bab8519116cff5554ed298a2

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