Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc07759e80e52c7…

MALICIOUS

PDF

49.2 KB Created: 2021-05-14 01:42:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b92ea8aeb486da6424f58d69c7de323f SHA-1: 713fa84bf20556b785ff765f17748b18c6701067 SHA-256: 9dc07759e80e52c71e73abbc8d685075b55769c9e0fbba43ea3ff50500011fcc
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains lures for hacking popular games, directing users to external URLs that likely host malicious content. The presence of a download button heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful files. The document body and extracted URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 https://netcdn.xyz/app/431946152/how-to-hack-roblox-accounts-on-phone-game-hack
    • http://calavera.be/images/hack-coin-master-game-apk-download_GM406889139.pdf
    • http://calavera.be/images/free-roblox-clothes-for-your-avatar_GM431946152.pdf
    • http://calavera.be/images/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdf
    • http://calavera.be/images/500-free-spins-coin-master_GM406889139.pdf
    • http://calavera.be/images/free-minecraft-coins_GM479516143.pdf
    • http://calavera.be/images/free-spin-and-coin_GM406889139.pdf
    • http://calavera.be/images/hack-coin-master-apk-download_GM406889139.pdf
    • http://calavera.be/images/coin-master-cards-free-cards_GM406889139.pdf
    • http://calavera.be/images/codes-how-to-get-free-robux_GM431946152.pdf
    • http://calavera.be/images/how-to-hack-robux_GM431946152.pdf
    • http://calavera.be/images/minecraft-116-free_GM479516143.pdf
    • http://calavera.be/images/coinmasterdailyfreespins-com_GM406889139.pdf
    • http://calavera.be/images/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://calavera.be/images/roblox-free-clothes-hack_GM431946152.pdf
    • http://calavera.be/images/how-to-hack-coin-master-using-es-file_GM406889139.pdf
    • http://calavera.be/images/free-robux-generator-without-verification_GM431946152.pdf
    • http://calavera.be/images/robux-today_GM431946152.pdf
    • http://calavera.be/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://calavera.be/images/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdf
    • http://calavera.be/images/rbx-gg-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a0f.bin
b7e22eb01b7685463d3e686ff1211b7ec75d506f8f1e92adcb4247e02629b5c1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A0F 37668 bytes
font_01_sfnt_off00009cc0.bin
92714a2af62378a1839a0ba08facac9787f9fdc52ffb1ff0f3d5734c2bdfa821		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC0 18908 bytes

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