PDF malware analysis — malicious · 6df798699c471bea

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 13:26:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 5dce76ceae3a1d38dc5d57163ed1df0e SHA-1: 214bd1407e2c367ba7fb4eadd4e67a8545c249e6 SHA-256: 6df798699c471beaeb9755b123effa268299342913e7b0a42fd0c5ce37a709f8

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, designed to trick users into interacting with embedded links. These links, such as http://netcdn.co/app/431946152/how-to-make-your-roblox-character-aesthetic-for-free-game-hack, likely lead to the download of a second-stage payload. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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/how-to-make-your-roblox-character-aesthetic-for-free-game-hack
- http://astdubai.co/userfiles/files/free-robux-no-add-ons_GM431946152.pdf
- http://astdubai.co/userfiles/files/minecraft-building-hacks_GM479516143.pdf
- http://astdubai.co/userfiles/files/minecraft-hack-download_GM479516143.pdf
- http://astdubai.co/userfiles/files/free-stuff-on-roblox-2021_GM431946152.pdf
- http://astdubai.co/userfiles/files/what-are-points-for-in-roblox_GM431946152.pdf
- http://astdubai.co/userfiles/files/how-to-get-minecraft-java-free_GM479516143.pdf
- http://astdubai.co/userfiles/files/wurst-client-112-2_GM479516143.pdf
- http://astdubai.co/userfiles/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
- http://astdubai.co/userfiles/files/coin-master-free-spins-link-31-march-2021_GM406889139.pdf
- http://astdubai.co/userfiles/files/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdf
- http://astdubai.co/userfiles/files/free-robux-obby-2021_GM431946152.pdf
- http://astdubai.co/userfiles/files/50-000-free-spins-coin-master_GM406889139.pdf
- http://astdubai.co/userfiles/files/minecraft-gun-mod-download-free_GM479516143.pdf
- http://astdubai.co/userfiles/files/free-roblox-gift-card_GM431946152.pdf
- http://astdubai.co/userfiles/files/coin-master-lucky-patcher-hack_GM406889139.pdf
- http://astdubai.co/userfiles/files/buy-robux-free_GM431946152.pdf
- http://astdubai.co/userfiles/files/free-robux-pastebin_GM431946152.pdf
- http://astdubai.co/userfiles/files/download-hacked-games-coin-master_GM406889139.pdf
- http://astdubai.co/userfiles/files/coin-master-free-link-spin_GM406889139.pdf
- http://astdubai.co/userfiles/files/tiktok-free-fans-and-followers_GM835599320.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002f80.bin` `be5f570eb766b0af08ab9584a0835f0639705f7333de1b3e40721ed57dbb129f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F80	22568 bytes
`font_01_sfnt_off000061a0.bin` `9ac4db8affd0905992aadb919305f81c3697973abdbf38d70837dcdd197eaa7c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61A0	19872 bytes

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