Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e1a7a4537acf30f…

MALICIOUS

PDF

37.5 KB Created: 2021-05-22 05:57:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d56d70aeff5f15dca84de1acaf1173d4 SHA-1: 2e2d72030c35225f1cf174d515adc84ab71c755a SHA-256: 5e1a7a4537acf30f9a895f6df39a86cb29a00f69e7158015cec5347ca4fbf22f
62 Risk Score

Malware Insights

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

The PDF document contains text and embedded URLs that promote a 'Free Robux No Verification' lure, indicating a phishing or scam attempt. The presence of multiple URLs pointing to download sites for hacks and generators, combined with a call-to-action button, strongly suggests the document is designed to trick users into downloading malware. The ML classifier also flagged this PDF as malicious.

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/free-robux-no-verification-game-hack
    • http://tah-li.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://tah-li.com/images/mcpe-master-hack-unlimited-coins-download_GM406889139.pdf
    • http://tah-li.com/images/coin-master-hack-no-verify_GM406889139.pdf
    • http://tah-li.com/images/free-robux-sites-that-work_GM431946152.pdf
    • http://tah-li.com/images/coin-master-hack-tool-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003615.bin
bb7559a9720e7da4bf938542aaf842072f883fb36a052368dc178879568e19d7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3615 25240 bytes
font_01_sfnt_off0000704b.bin
361892a278de990f6dfe9fe9f512a0ec39aeba1740037781b92f32c6ad2b5051		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704B 18600 bytes

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