Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce569ce8d3619b9f…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 11:34:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ac5c7f5263332f2f07d5295e14b461fb SHA-1: 9660c0d95de94431549bc121f86e500d0389873e SHA-256: ce569ce8d3619b9f27313a3404ff97268005e7ad4509251a13f27b0004939362
82 Risk Score

Malware Insights

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

The PDF document employs a lure related to 'free generator / game hack' to entice users. It contains numerous embedded URLs pointing to websites offering game hacks and cheats, such as Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/how-to-get-paid-roblox-games-for-free-game-hack, is likely a redirector to malicious content or a phishing site. The ML classifier strongly flagged this PDF as malicious.

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/how-to-get-paid-roblox-games-for-free-game-hack PDF link annotation
    • https://cosmosocean.com.tw/upload/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-cheat-money-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/como-hackear-cualquier-juego-de-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-robux-hack-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-hacks-wallbang-download_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/easy-hack-1-step-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-do-i-get-minecraft-for-free_GM479516143.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
font_00_sfnt_off00002ec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC4 21892 bytes
SHA-256: 527a6458a4e3420460dfa84d73a53b3bfe3463129b45b31a002b5178a1670c81
font_01_sfnt_off00005ed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED2 19628 bytes
SHA-256: 3491f7e432a6264472ea3e55a64ccfa847b00d6a964593d4f4029221f50915c1

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