Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88aeed107217db2…

MALICIOUS

PDF

42.3 KB Created: 2021-05-19 13:30:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fd00f35e336dbe654f679d5c9516e58d SHA-1: ea2c4851086febb2e827804a837d6e2f8ac6f776 SHA-256: f88aeed107217db25a45effd613992f22f4fd87091226ec1aa8b316859ad9e59
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-50-spin-link-game-hack PDF link annotation
    • https://piscinasmundoacuatico.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/robux-app_GM431946152.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://piscinasmundoacuatico.com/images/coin-master-hack-extension_GM406889139.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_003_off00004a64.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A64 25452 bytes
SHA-256: 1e2bb2884f55fe809d0da11bda5b296fc5fe5cdbf15fee10a88e59789bc651fe
font_01_sfnt_off0000831e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831E 18196 bytes
SHA-256: 1133898f442132de6b3babc63911783103e8ae6e1bd19e5d3637905fb0848ccb

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