Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d6f5026639ab91…

MALICIOUS

PDF

36.1 KB Created: 2021-05-21 19:11:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2d28cc6487eb853de8e6365bdc7e0ac9 SHA-1: c6b0be6eb24f12f6cf7cf54268b5022c7c79b6a0 SHA-256: 18d6f5026639ab913fea42a309e15d79a40c7249fa282a6a25dec5eaa5b8b528
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and displays a fake CAPTCHA or human verification prompt, a common lure for users seeking in-game currency. The document body explicitly mentions 'Roblox Promo Codes For Free Robux' and includes a call to action to access a generator, reinforcing the phishing attempt. The presence of multiple suspicious URLs suggests an attempt to redirect the user to a malicious site.

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/roblox-promo-codes-for-free-robux-game-hack
    • https://bwsrubber.com/image/data/files/how-to-get-free-robux-without-verifying_GM431946152.pdf
    • https://bwsrubber.com/image/data/files/free-spin-link-coin-master_GM406889139.pdf
    • https://bwsrubber.com/image/data/files/minecraft-free-download-no-virus_GM479516143.pdf
    • https://bwsrubber.com/image/data/files/hack-coin-master-link_GM406889139.pdf
    • https://bwsrubber.com/image/data/files/free-robux-app-real_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033fb.bin
2a501d7a1259daff3a6c1909ff76f48d40f68f4fa8f14ae5420f10a17d61d942		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33FB 23956 bytes
font_01_sfnt_off00006ab3.bin
3ed324e585500d41944ebd93500991c566830021fec9c5a8323b790459c3443f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB3 18676 bytes

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