Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74d58621cd170b3…

MALICIOUS

PDF

39.3 KB Created: 2021-05-23 12:51:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ac0a034bf29bd1ff3560476a472e9846 SHA-1: 5321a021c256672a8a863d13e4bea2769f29023a SHA-256: d74d58621cd170b3065c1023a8898cd660dcdbbf3c3ba87d2abdfe91be3d7fec
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and text lures related to 'Free Robux' and game hacks, indicating a phishing or scam attempt. The presence of a visual download button and callback lure suggests a user interaction is expected to proceed with the scam. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/free-robux-game-hack
    • http://echosvoix.ch/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://echosvoix.ch/images/how-to-pubg-uc-free_GM1330123889.pdf
    • http://echosvoix.ch/images/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://echosvoix.ch/images/robloxmatchcom-free-robux_GM431946152.pdf
    • http://echosvoix.ch/images/games-for-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002f16.bin
222a845c35a49ced45ec3642ca793d8fd1b8d6edf27c8e297b1db016142534cc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F16 28512 bytes
font_01_sfnt_off00006ebe.bin
eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBE 2940 bytes
font_02_sfnt_off000078cd.bin
3ef9e48aa3d97d4217e004f7625a8cbae9320a74231b80a01553f6433e422360		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CD 18012 bytes

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