Malicious PDF — malware analysis report

Static analysis result for SHA-256 03bb792eefff53b0…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 13:56:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f480c3803af10c532f79c8e856364963 SHA-1: 3460eea4feb0c4d584741b19ea191410f6d5a5ee SHA-256: 03bb792eefff53b0d5f99845fad2fec70e3a3ad0e0b3e005989c09d1a65f25f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains heuristics indicating it's a lure for game hacks, specifically mentioning 'free robux'. It embeds a URL, http://netcdn.co/app/431946152/nisterv-free-robux-hack-game-hack, which is flagged as a redirector to a 'free generator / game hack'. This suggests the document's primary purpose is to trick users into visiting a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/nisterv-free-robux-hack-game-hack PDF link annotation
    • https://www.man2samarinda.com/__statics/gudangsoal/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/coin-master-cheats-2021_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
font_00_sfnt_off000031e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E4 21940 bytes
SHA-256: 644d7f66af4013895480536bd2f0e981e49d890b40596f60f1790482876bca43
font_01_sfnt_off0000625e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625E 19224 bytes
SHA-256: 5976bd146fc09aba6e879babb278910a5c30a93fe099f4f366df285481237301

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