Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ce1d40c34bde3c…

MALICIOUS

PDF

32.6 KB Created: 2021-07-19 15:31:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 828079a084fc0e1fbe59351a21476f87 SHA-1: 6b4f00b6988302bdbdf15eef25038c2bb99bc1a6 SHA-256: f3ce1d40c34bde3c1deec98f87adb79ad9e2f1467e0dee6a4d731e9c8fd20438
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent call-to-action to access a 'Robux Generator'. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links to sites offering game hacks and cheats indicates a phishing or scam attempt. The document's content and structure suggest it is designed to trick users into visiting malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/how-to-get-free-robux-hack-game-hack
    • https://magistrinfo.ru/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://magistrinfo.ru/images/tiktok-fans-free_GM835599320.pdf
    • https://magistrinfo.ru/images/hacks-to-get-free-robux_GM431946152.pdf
    • https://magistrinfo.ru/images/coin-master-daily-free-spins_GM406889139.pdf
    • https://magistrinfo.ru/images/free-tiktok-bots_GM835599320.pdf
    • https://magistrinfo.ru/images/free-tiktok-followers-app_GM835599320.pdf
    • https://magistrinfo.ru/images/how-to-earn-free-robux_GM431946152.pdf
    • https://magistrinfo.ru/images/free-minecraft-premium-account_GM479516143.pdf
    • https://magistrinfo.ru/images/how-to-get-free-robux-on-roblox_GM431946152.pdf
    • https://magistrinfo.ru/images/free-tiktok-likes-generator_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002acb.bin
ab22fea128b10f7f842c93696dccae910e0037f3eee2de51de7483cf732b209a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACB 22132 bytes
font_01_sfnt_off00005b7e.bin
f1cdf876f91d9e30da1238ee6bc5322a54fb60d0a8e12f5fc7ae71cdf41b6736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7E 18868 bytes

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