Malicious PDF — malware analysis report

Static analysis result for SHA-256 e032135449d2c655…

MALICIOUS

PDF

46.4 KB Created: 2021-06-09 03:16:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bac8500244ba35ad6bda81c57266c994 SHA-1: a085b030693ba4ffb325f97949cbb2d17f36a434 SHA-256: e032135449d2c6553a30c7793259ea878b298fc1c577478531868cc68410d411
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for 'free Robux' and other game-related items, directing users to external URLs for downloads. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful content. No scripts were extracted, but the overall pattern suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.tw/app/431946152/70-free-robux-game-hack
    • https://morishita-tc.com.tw/image/data/files/minecraft-building-hacks_GM479516143.pdf
    • https://morishita-tc.com.tw/image/data/files/coin-master-spins-2021_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/roblox-online-free_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/minecraft-pe-hacked-client-download_GM479516143.pdf
    • https://morishita-tc.com.tw/image/data/files/free-robux-generator-without-human-verification_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/tiktok-free-generator_GM835599320.pdf
    • https://morishita-tc.com.tw/image/data/files/free-robux-human-verification_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/free-spins-coin-master-site-wwwquoracom_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-pc_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-version-2021-free-download_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/free-minecraft-premium-account_GM479516143.pdf
    • https://morishita-tc.com.tw/image/data/files/roblox-hack-download-windows-7_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-xyz_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/free-tiktok-coins-2021_GM835599320.pdf
    • https://morishita-tc.com.tw/image/data/files/free-roblox-cards-pin-number_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/withdraw-robux_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/hack-coin-master-apk-32_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e97.bin
cb8e279278225b8fc617f665e4e583f86372edb66d7adfe556e87dd2032a9ded		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E97 24936 bytes
font_01_sfnt_off000085e9.bin
9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85E9 5596 bytes
font_02_sfnt_off00009290.bin
c589e89ca85c1327ee8e7aaea7c6f404e4ef5cda50d533736a2d3252950ecd14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9290 18240 bytes

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