Malicious PDF — malware analysis report

Static analysis result for SHA-256 296a4563b3bda8ea…

MALICIOUS

PDF

41.5 KB Created: 2021-04-25 12:27:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4a9ce011f49d2bc1d3b10be1f47360ce SHA-1: 2203908cf89f8de17bc31f473e4d474e5040930e SHA-256: 296a4563b3bda8ea30ae8a96f403126d71039a56f0dbd0cc6d5e9c331befdc92
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 0.9941

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/431946152/how-to-hack-into-other-peoples-account-on-roblox-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/denis-cheating-in-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hacking-giving-my-fans-robux-inquisitor.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/mad-city-script-roblox-download-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-codes-for-clothes.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-site-17-hacker.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-roblox-on-tablet.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/test-all-the-roblox-gears-free-admin.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-nonsense-diamond.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-hack-generator-pc.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-legit-not-patched.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_off00004307.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4307 26420 bytes
SHA-256: 5622764b90cbaae95d4d606ca37eeb5e23b6b11b0ce7382b672c54ea46ec9fbb
font_01_sfnt_off00007e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2C 19088 bytes
SHA-256: e7f5c14ddb2fcac7f623873cbe2f0a413fa33d7427ac18eed310d0e7f9a29515

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