PDF malware analysis — malicious · d90656895dacbc40

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 08:25:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 38a389193952ec81cee8129e591fd463 SHA-1: 0b25cb0ade1a682c734425649d75155d9ddc9d99 SHA-256: d90656895dacbc40afeb061d604ea1c59ac321c3872ca7cebff5695af0b122b5

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF document that displays a fake CAPTCHA to trick the user into interacting with it. It contains an embedded URI pointing to a URL that appears to be a lure for game-related hacks. The ML classifier also flagged this PDF as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, but the presence of a fake CAPTCHA and an external URI suggests the document is designed to lead the user to a malicious site for further exploitation or payload download.

Machine Learning

Nyx PDF Classifier malicious score 0.9874

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.online/app/1094591345/pokemon-go-hack-free-pokecoins-game-hack
- https://lib.unitri.ac.id/repository/coin-master-free-gifts_GM406889139.pdf
- https://lib.unitri.ac.id//repository/minecraft-for-free-on-phone_GM479516143.pdf
- https://lib.unitri.ac.id/repository/free-spins-and-coins-coin-master-link-2021_GM406889139.pdf
- https://lib.unitri.ac.id/repository/minecraft-apk-free-download_GM479516143.pdf
- https://lib.unitri.ac.id/repository/roblox-hacks-2021_GM431946152.pdf
- https://lib.unitri.ac.id/repository/cute-free-stuff-on-roblox_GM431946152.pdf
- https://lib.unitri.ac.id/repository/pokemon-go-free-and-switch-connect_GM1094591345.pdf
- https://lib.unitri.ac.id//repository/www-robux_GM431946152.pdf
- https://lib.unitri.ac.id/repository/coin-master-coins_GM406889139.pdf
- https://lib.unitri.ac.id//repository/coin-master-daily-free-spins-blog_GM406889139.pdf
- https://lib.unitri.ac.id/repository/coin-master-hack-link-2021_GM406889139.pdf
- https://lib.unitri.ac.id//repository/minecraft-free-android_GM479516143.pdf
- https://lib.unitri.ac.id//repository/how-to-get-free-hats-on-roblox_GM431946152.pdf
- https://lib.unitri.ac.id//repository/2021-coin-master-hack_GM406889139.pdf
- https://lib.unitri.ac.id/repository/how-to-create-group-in-coin-master-free-spins_GM406889139.pdf
- https://lib.unitri.ac.id//repository/minecraft-mod-menu_GM479516143.pdf
- https://lib.unitri.ac.id/repository/how-to-get-free-roebucks_GM431946152.pdf
- https://lib.unitri.ac.id/repository/free-minecraft-accounts-2021_GM479516143.pdf
- https://lib.unitri.ac.id//repository/coin-master-cards-for-free_GM406889139.pdf
- https://lib.unitri.ac.id//repository/free-robux-no-scam_GM431946152.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_off00004f84.bin` `59a2da119789e06bf7038cb1a5920f8df265b0e3a0e0643b6deda4a833a2e26b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4F84	23872 bytes
`font_01_sfnt_off00008544.bin` `5a3f72edb7f884280ac77265c0f7edc84dcdf803d1bc4477245e77f8a5605004`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8544	18192 bytes

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