Malicious PDF — malware analysis report

Static analysis result for SHA-256 5551d831de32590d…

MALICIOUS

PDF

48.6 KB Created: 2021-06-02 20:46:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d3b60637d6989ad7b98fc83ff3939e53 SHA-1: 0df9919e2f3626cb623917b095bf3b303b9ba2c6 SHA-256: 5551d831de32590d895c6b5384e91a0a85f8104ef57f17488e7e9f88a1232209
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document body and extracted URLs indicate a lure for free in-game currency (Robux, Coin Master spins) which is a common phishing tactic. The presence of external URIs and a high ML classifier score suggest malicious intent, likely to redirect users to a site that downloads further malware or attempts credential theft. No scripts were extracted, but the document's structure and content strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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-get-free-robux-from-your-game-game-hack
    • http://boliviagasenergia.com/images/roblox-hack-ga_GM431946152.pdf
    • http://boliviagasenergia.com/images/how-to-get-free-robux-with-no-verification_GM431946152.pdf
    • http://boliviagasenergia.com/images/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://boliviagasenergia.com/images/coin-master-free-spins-2021_GM406889139.pdf
    • http://boliviagasenergia.com/images/free-hair-roblox-boy_GM431946152.pdf
    • http://boliviagasenergia.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://boliviagasenergia.com/images/coin-master-hack-spin_GM406889139.pdf
    • http://boliviagasenergia.com/images/best-free-minecraft-hacked-client_GM479516143.pdf
    • http://boliviagasenergia.com/images/free-robux-co_GM431946152.pdf
    • http://boliviagasenergia.com/images/roblox-zone-free-robux_GM431946152.pdf
    • http://boliviagasenergia.com/images/how-to-get-free-robux-easy-no-download_GM431946152.pdf
    • http://boliviagasenergia.com/images/minecraft-hacked-client-download_GM479516143.pdf
    • http://boliviagasenergia.com/images/coin-master-free-spins-coins_GM406889139.pdf
    • http://boliviagasenergia.com/images/coin-master-hacked-apk-download-for-android_GM406889139.pdf
    • http://boliviagasenergia.com/images/roblox-hacks-com_GM431946152.pdf
    • http://boliviagasenergia.com/images/roblox-login-hack_GM431946152.pdf
    • http://boliviagasenergia.com/images/free-robux-websites-no-human-verification_GM431946152.pdf
    • http://boliviagasenergia.com/images/free-spin-coin-master-hacktoman_GM406889139.pdf
    • http://boliviagasenergia.com/images/free-minecraft-account_GM479516143.pdf
    • http://boliviagasenergia.com/images/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005404.bin
e723b26a5e19ea12ca67ea380eafa9e0a04a9aa2e320634d832fdcc965360c9a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5404 25676 bytes
font_01_sfnt_off00008fc1.bin
5a38050e56bfed6ba013c4835499ae05f4b57b22e606c9172dd4bc2ae7fd1207		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC1 2872 bytes
font_02_sfnt_off0000997d.bin
e6a15658ca43ee5a0f959e29e4c12a0586aed24c99408855cf72c556a3fa8b54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x997D 18932 bytes

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