PDF malware analysis — malicious · 382468790a323fff

MALICIOUS

PDF

42.1 KB Created: 2021-06-14 00:28:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: e9fae5656a4fbdcc3a985b56cce0ad6f SHA-1: 79659d88d4c4bdba8d73b7eb61f140216a7a31bb SHA-256: 382468790a323ffff678cf9af60a44cb294187b5dcb1262050623c84bcdd41fe

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt to trick users into downloading content, likely a second-stage payload. The embedded URL http://netcdn.co/app/431946152/free-iconic-skin-for-roblox-game-hack is directly associated with this lure. The ML classifier strongly flagged this PDF as malicious, supporting the observed social engineering tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 http://netcdn.co/app/431946152/free-iconic-skin-for-roblox-game-hack
- https://www.hotel-forsthaus.com/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/free-robux-websites-that-actually-work_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/free-robux-no-verify-2021_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/wwwfreerobuxroblox_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/vechile-simulator-roblox-free_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/free-robux-codes-2021_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/roblox-free-catalog-item_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/coin-master-free-spins-without-verification_GM406889139.pdf
- https://www.hotel-forsthaus.com/images/coin-master-daily-link_GM406889139.pdf
- https://www.hotel-forsthaus.com/images/free-robux-generator-2021_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/coin-master-free-spins-save_GM406889139.pdf
- https://www.hotel-forsthaus.com/images/free-minecraft-printables_GM479516143.pdf
- https://www.hotel-forsthaus.com/images/coin-master-34-4-free-download_GM406889139.pdf
- https://www.hotel-forsthaus.com/images/how-to-hack-weight-lifting-simulator-2-roblox_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/60-free-spins-coin-master_GM406889139.pdf
- https://www.hotel-forsthaus.com/images/heroes-online-hack-roblox_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/coin-master_GM406889139.pdf
- https://www.hotel-forsthaus.com/images/universal-minecraft-converter-free_GM479516143.pdf
- https://www.hotel-forsthaus.com/images/infinite-moneyz-roblox-injector-hack_GM431946152.pdf
- https://www.hotel-forsthaus.com/images/roblox-free-robux-hack_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000049ab.bin` `592e4df052f3a9398a3f03eda1f2f8c887a65236552ebcc4db9cde642883a976`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49AB	24728 bytes
`font_01_sfnt_off0000827e.bin` `4d6721c8181382c0036bc8def945d76dea9224b501f7faebb4a51bfd9ed0f320`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x827E	18236 bytes

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