Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84ab4aa7c632f70…

MALICIOUS

PDF

43.8 KB Created: 2021-05-15 09:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e060fe44e0bc80cd7c1eb783c75b7674 SHA-1: c0bf3b5f4cc25aea980a61a2e8ef354f1d9a4414 SHA-256: d84ab4aa7c632f708256d8297935eceb0573f28c36c7470ebf08e913b89a90c4
90 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA or verification prompt, a common lure to trick users into clicking malicious links. The embedded URL and numerous other URLs point to sites offering game-related cheats or hacks, suggesting a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs indicates a potential download or redirection to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/robuxglobal.com-game-hack
    • http://montchanintt.fr/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
    • http://montchanintt.fr/images/how-to-get-free-premium-roblox_GM431946152.pdf
    • http://montchanintt.fr/images/free-robux-hack_GM431946152.pdf
    • http://montchanintt.fr/images/websites-that-give-free-robux_GM431946152.pdf
    • http://montchanintt.fr/images/free-minecraft-gift-card_GM479516143.pdf
    • http://montchanintt.fr/images/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • http://montchanintt.fr/images/how-to-get-free-robux-for-free_GM431946152.pdf
    • http://montchanintt.fr/images/free-robux-obby_GM431946152.pdf
    • http://montchanintt.fr/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdf
    • http://montchanintt.fr/images/free-girl-hair-roblox_GM431946152.pdf
    • http://montchanintt.fr/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdf
    • http://montchanintt.fr/images/free-2021-robux_GM431946152.pdf
    • http://montchanintt.fr/images/free-free-robux_GM431946152.pdf
    • http://montchanintt.fr/images/coin-master-free-coins-links-2021_GM406889139.pdf
    • http://montchanintt.fr/images/free-robux-generator-2021-no-survey_GM431946152.pdf
    • http://montchanintt.fr/images/coin-master-free-spins-link-2021-march_GM406889139.pdf
    • http://montchanintt.fr/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdf
    • http://montchanintt.fr/images/what-are-points-for-in-roblox_GM431946152.pdf
    • http://montchanintt.fr/images/buy-robux-free_GM431946152.pdf
    • http://montchanintt.fr/images/free-spins-from-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a3b.bin
760cad764be9b4233e13dcf003e29f7cf2aecc820e107649fe0521fc223373aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A3B 27688 bytes
font_01_sfnt_off0000876e.bin
59fb30c80e85498b2f7c5a4d05a5dec781d28c8684b6c7c45546c982bbf76575		 pdf-font-stream PDF embedded font (sfnt) at offset 0x876E 18764 bytes

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