PDF malware analysis — malicious · cf62b04a8ee3a2f4

MALICIOUS

PDF

41.7 KB Created: 2021-05-15 13:39:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 25883856b66c3cc618e9cfba34e8b2ac SHA-1: d1376fbfd84685b32d6668c32fe80e66bd7fa309 SHA-256: cf62b04a8ee3a2f4224823b9fbfae8a96ce53bfb4e6b8c41aa93c1a95e3c853e

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure and an embedded URI pointing to a website offering game cheats. This suggests the document is designed to trick users into visiting a malicious site, likely to download further malware or engage in credential harvesting. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure.

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 https://netcdn.xyz/app/431946152/robux-page-game-hack
- https://www.lauresa.de/images/free-robux-no-verification-needed_GM431946152.pdf
- https://www.lauresa.de/images/how-to-downgrade-minecraft-pe_GM479516143.pdf
- https://www.lauresa.de/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdf
- https://www.lauresa.de/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdf
- https://www.lauresa.de/images/free-robux-app-real_GM431946152.pdf
- https://www.lauresa.de/images/free-coins-and-spins-coin-master_GM406889139.pdf
- https://www.lauresa.de/images/promo-code-free-robux_GM431946152.pdf
- https://www.lauresa.de/images/mc-update_GM479516143.pdf
- https://www.lauresa.de/images/coin-master-hack-facebook_GM406889139.pdf
- https://www.lauresa.de/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdf
- https://www.lauresa.de/images/roblox-free-robux-com_GM431946152.pdf
- https://www.lauresa.de/images/free-coin-master-spins-2021_GM406889139.pdf
- https://www.lauresa.de/images/earn-rbx_GM431946152.pdf
- https://www.lauresa.de/images/how-to-hack-any-roblox-account_GM431946152.pdf
- https://www.lauresa.de/images/bad-minecraft-free_GM479516143.pdf
- https://www.lauresa.de/images/hack-coin-master-ios-download_GM406889139.pdf
- https://www.lauresa.de/images/minecraft-building-hacks_GM479516143.pdf
- https://www.lauresa.de/images/oprewards-com-robux_GM431946152.pdf
- https://www.lauresa.de/images/free-robux-generator-without-verification_GM431946152.pdf
- https://www.lauresa.de/images/coin-master-free-spin-and-coin_GM406889139.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_off000045cc.bin` `00ba7adb5afecf5bcc74fe4075ad108095321662a16718505d6a51cae3a63ff9`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x45CC	25052 bytes
`font_01_sfnt_off00007fd4.bin` `5c5a9e016ebd8405bc7924fb9e9ebc34b94767cfb6a9fd13d56cd9d284b9d9b8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FD4	18520 bytes

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