Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c293f9551741ca8…

MALICIOUS

PDF

41.5 KB Created: 2021-04-29 05:55:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 815a42e86de41850783abd3a864e0682 SHA-1: 1d924716144e5890334db63283567c843d86e4f9 SHA-256: 4c293f9551741ca8fb696a54fb0a0c84a5b894c5b37b76b91e48c63415427613
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/hack-de-roblox-para-tener-robux-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/roblox-phone-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-bee-simulator-hack-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-give-free-reedeem-card-pin.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-promo-codes-on-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-hack-no-survey-no-download-no-human-verification.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/join-the-group-for-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-logo-youtube-for-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-without-human-verification-or-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/promo-codes-hack-on-roblox-gives-free-robux-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/phantom-forces-roblox-cheat-codes.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000431a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x431A 26240 bytes
SHA-256: 75fa926fb40e62a2d85a70e2fa8d2582b74ab6cbdc7d5e2b38c34297529a9fc7
font_01_sfnt_off00007f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7A 18644 bytes
SHA-256: 16732b18f2474f6b6fe1c990025ad08b410161f73c62db02cade3fab70efc031

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