Malicious PDF — malware analysis report

Static analysis result for SHA-256 301c4d2e48fe4fb1…

MALICIOUS

PDF

37.0 KB Created: 2021-05-22 06:39:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ccf9657d2fe97447192f16032bb46b52 SHA-1: a64b174ff3624e6f71aa59594e013694c8fbbfd8 SHA-256: 301c4d2e48fe4fb172a3ecd158fa2ace62e9e3e6e653f8b960eda83535924541
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for free Robux, directing users to a suspicious URL. The presence of embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or initiate a download. While no scripts were explicitly extracted, the document structure and embedded URIs suggest it's designed to exploit user interest in in-game currency to compromise them.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-easy-2021-game-hack
    • http://wiesbadener-marktplatz.de/images/coin-master-email-free-spins_GM406889139.pdf
    • http://wiesbadener-marktplatz.de/images/50-free-spins-coin-master_GM406889139.pdf
    • http://wiesbadener-marktplatz.de/images/coin-master-el-tiger-card-free_GM406889139.pdf
    • http://wiesbadener-marktplatz.de/images/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://wiesbadener-marktplatz.de/images/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003364.bin
8a579cc3845d2fbb30afa84436984ce1033705b904619a5a92db63428456ac18		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3364 24916 bytes
font_01_sfnt_off00006cb9.bin
b4f5bd8c8985fe06cb8cafea7c6a35db41ab3230d9b691422e9309a9df735677		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB9 19092 bytes

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