Malicious PDF — malware analysis report

Static analysis result for SHA-256 02cf11a446c667a7…

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 16:31:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9a92792bb96af5d5891e5c13b0b3b345 SHA-1: be22f4c7d770c60bf73c7fe0dc59388db6690ae7 SHA-256: 02cf11a446c667a713d36bbb0b047a1201276483bd10b1bcc69b1a99b71b5088
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to websites that promise 'hacks' for popular games like Roblox and Coin Master. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs and a call-to-action phrase suggests a phishing or malware distribution attempt. The document body and extracted URLs point towards a lure for obtaining in-game currency or game exploits, which is a common tactic for distributing malware or conducting scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-hack-roblox-accounts-on-phone-game-hack
    • https://elearning.madhpku.com/__statics/gudangsoal/files/how-to-get-free-robux-no-joke-2021_GM431946152.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/coin-master-promo-code-2021_GM406889139.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/minecraft-115-2-hacks_GM479516143.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/mod-hack-roblox_GM431946152.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/free-robux-generator_GM431946152.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/how-to-get-robux-on-roblox_GM431946152.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/how-to-get-free-robux-app_GM431946152.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/coin-master-in-app-purchase-hack_GM406889139.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/legit-free-spins-coin-master_GM406889139.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/free-links-coin-master_GM406889139.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/coin-master-hack-without-downloading-apps_GM406889139.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/coin-master-hack-android-2021_GM406889139.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/coin-master-cheats-free-spins_GM406889139.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/robux-fun-hack_GM431946152.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/coin-master-village-3_GM406889139.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/hacker-roblox-avatar_GM431946152.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/pubg-uc-ykleme-perdigital_GM1330123889.pdf
    • https://elearning.madhpku.com/__statics/gudangsoal/files/login-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003170.bin
59350b17b94b142df4b1c2a7a131c46bfcfdd6aef1b7689d294e9eeecf3866f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3170 22680 bytes
font_01_sfnt_off00006446.bin
084794c69c3a15ed1330993b6e362ce24a67b8c731d0da79d42958a9f82904df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6446 19384 bytes

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