Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c879b583161372b…

MALICIOUS

PDF

41.9 KB Created: 2021-05-10 16:04:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 009941b649109dee073f91658a5210da SHA-1: 7af7e3924fa19c8e2f929fc517b4a2f6947034ae SHA-256: 8c879b583161372b2cfbee168c9fa292c828fd82112658fcfa6cfe7b7dffec76
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' to lure users. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-hack-version-download-game-hack. The document body and embedded links suggest a phishing or scam attempt, likely to trick users into downloading further malware or providing personal information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9774

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-hack-version-download-game-hack In PDF document text
    • http://www.yes-info.fr/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.yes-info.fr/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-free-spin-now_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_003_off00003a52.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3A52 25272 bytes
SHA-256: c88ea89894a0c04d21b05299e71f3e43c35ae7e5cec2ede6fffa969426b8c125
font_01_sfnt_off000073a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A6 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off0000812e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812E 18428 bytes
SHA-256: f912b3cee97859de3df5e35c061868833ee48e9318237c6af7b49665e28b08ba