Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e47e7bed55e691…

MALICIOUS

PDF

36.5 KB Created: 2021-05-20 21:03:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d4db9001e62dbfb0b11594e1ea8b7ac9 SHA-1: 93f5e560bda65302b0c012dd2ffbeac44a07dd9d SHA-256: c1e47e7bed55e691ba8905118b5f62b45188d152550049cdc39a94e6a72da528
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a call-to-action to obtain "Free Robux", directing users to a malicious URL. This suggests a social engineering attack aimed at tricking users into downloading potentially harmful content or visiting further malicious sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-no-generator-game-hack
    • https://ivalue.tw/files/ckfinder/files/coin-master-apk-hack-3527_GM406889139.pdf
    • https://ivalue.tw/files/ckfinder/files/google-coin-master-free-spins_GM406889139.pdf
    • https://ivalue.tw/files/ckfinder/files/https-oprewards-com-roblox_GM431946152.pdf
    • https://ivalue.tw/files/ckfinder/files/links-to-get-free-coins-in-coin-master_GM406889139.pdf
    • https://ivalue.tw/files/ckfinder/files/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000344f.bin
ad2f71041299e90b3bd515a79ad36b5919050039c847e1cc0142520f1332b2cd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x344F 25288 bytes
font_01_sfnt_off00006d3a.bin
d0a2580a9848789708f711aeedd4c44eef26827bf748da476089155bc80243e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3A 18344 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.