Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb587c483e7b1b6…

MALICIOUS

PDF

44.1 KB Created: 2021-05-22 02:09:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c0e78238621fc2255923239256dd2134 SHA-1: 50ac8bc47ee479949e321917c304c6970b56778e SHA-256: ccb587c483e7b1b677d6bae27507e3294c5e0281a24010b7d9f016ba3d329f5a
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure and multiple embedded URLs, including one pointing to 'free-robux-games-game-hack'. This suggests a social engineering attack aimed at tricking users into downloading potentially malicious files. The presence of multiple suspicious URLs reinforces the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7947

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-games-game-hack
    • http://sv-nahetal.de/images/minecraft-free-download-windows-10_GM479516143.pdf
    • http://sv-nahetal.de/images/coin-master-hack-without-verification-2021_GM406889139.pdf
    • http://sv-nahetal.de/images/hack-to-send-gold-cards-on-coin-master_GM406889139.pdf
    • http://sv-nahetal.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://sv-nahetal.de/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003447.bin
7649d64009664c8c57bd909ad732943de4038e620029a0738769be0e25fb6d8a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3447 26000 bytes
font_01_sfnt_off000070a5.bin
5af32b37221d415f2515053fbbd8f6bc07431225d9307a38dcee85078a8c20b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A5 4008 bytes
font_02_sfnt_off00007e4f.bin
e59bc53cd4c0ee65dc1533becad2866f345dcb060e6c68bb8187d21cb9f973ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4F 3396 bytes
font_03_sfnt_off00008a42.bin
50954281d46d1092d2c36c5fba9e04257001c8c7e5b0c8732206987489559ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A42 18500 bytes

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