Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cec616ac9ebb8bc…

MALICIOUS

PDF

38.0 KB Created: 2021-05-21 12:16:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0c2f41d78f0f531d9920580438111ddc SHA-1: e4353c5f298186dc1362868b6b77c99b1d42aafe SHA-256: 1cec616ac9ebb8bc77207af9e9bf96efd70db8aac691a39aaaa3770d92d0cb45
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, a common social engineering tactic to trick users into interacting with malicious links. The embedded URLs, such as 'https://netcdn.xyz/app/431946152/roblox-free-accessories-game-hack', likely lead to the download of a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/roblox-free-accessories-game-hack
    • http://reisebild.eu/images/mine-minecraft-games-for-free_GM479516143.pdf
    • http://reisebild.eu/images/roblox-free-hair-girl_GM431946152.pdf
    • http://reisebild.eu/images/how-to-get-free-robux-for-real_GM431946152.pdf
    • http://reisebild.eu/images/play-minecraft-free-online-no-download_GM479516143.pdf
    • http://reisebild.eu/images/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035fa.bin
0c99d3a7b4f090dcc01c756d3198fd8bf27ca71b42fc9ef8e704982f9e8810b8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35FA 27948 bytes
font_01_sfnt_off0000742b.bin
631d65c1f3e2a0dc4ab1c15de4169549fc1962130d484212c2774f26f0b2a84d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742B 18068 bytes

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