Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7be70856f2be392…

MALICIOUS

PDF

45.5 KB Created: 2021-05-14 00:30:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ba07e62a7d5f7d859cfd91f456e0cd5f SHA-1: 91a3a65d19eebad39646235f5c321b297e55fc4a SHA-256: b7be70856f2be392a032e0694b76bca69b7fb847927d3b0edff6ce7cb16ce8d4
62 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a call-to-action phrase, strongly suggesting a phishing or social engineering attempt. The primary URL, https://netcdn.xyz/app/431946152/roblox-free-robux-hack-game-hack, indicates a lure related to game exploits or currency. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/roblox-free-robux-hack-game-hack
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-codes_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-free-spins-link-june-2021_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/scaffold-minecraft-hack_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/minecraft-skins-download-free_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-level-4_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://lib.pps.uin-suka.ac.id/repository/google-coin-master-free-spins_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-and-spin_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/free-spins-coin-master-links_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/minecraft-hacks-list_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-free-spins-cheat-codes_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-spin-link-free-download_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/how-to-download-minecraft-hacks_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/pro-free-spins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004955.bin
1cfaf0bb86568c270f4c8dc1991f19a448e63470cbf4a3589183bf052a9c02f9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4955 24608 bytes
font_01_sfnt_off00008206.bin
40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8206 3884 bytes
font_02_sfnt_off00008eae.bin
44072fbb5c45a7604268a2c6438126b7db3492802a9c8847ecb07522db400813		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAE 18488 bytes

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