PDF malware analysis — malicious · a813c41b0eed3a5e

MALICIOUS

PDF

43.9 KB Created: 2021-05-13 02:59:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: ca15c2476f12763656e357922dcf6b37 SHA-1: ecb1127a784db280cfe9bc28c96a645514cc7ace SHA-256: a813c41b0eed3a5efc5ba8aaa4779215bc35002fb05d888c8beb2ba5832b4515

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 the user into downloading a malicious file, as indicated by the 'SE_FAKE_CAPTCHA' heuristic. The embedded URL, 'https://netcdn.xyz/app/406889139/coin-hack.hub-coin-master-game-hack', likely serves as the download location for a secondary payload. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-hack.hub-coin-master-game-hack
- https://www.chorwacjaapartamenty.com/images/how-do-u-hack-roblox_GM431946152.pdf
- https://www.chorwacjaapartamenty.com/images/minecraft-java-code-free_GM479516143.pdf
- https://www.chorwacjaapartamenty.com/images/coin-master-hack-mod-apk-free-download_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
- https://www.chorwacjaapartamenty.com/images/hack-coin-master-apk-31_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/coin-master-hack-ios-download_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/free-robux-site_GM431946152.pdf
- https://www.chorwacjaapartamenty.com/images/lazyblox-com-free-robux_GM431946152.pdf
- https://www.chorwacjaapartamenty.com/images/free-spin-coin-master-link-2021_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/roblox-free-robux-hack_GM431946152.pdf
- https://www.chorwacjaapartamenty.com/images/rare-free-links-to-coin-master_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/coin-master-free-spins-only_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/worst-client_GM479516143.pdf
- https://www.chorwacjaapartamenty.com/images/coin-master-free-spins-2021_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/static-moonactive_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/coin-master-free-spins-link-facebook_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/script-executor-roblox-free_GM431946152.pdf
- https://www.chorwacjaapartamenty.com/images/free-spins-for-coin-master_GM406889139.pdf
- https://www.chorwacjaapartamenty.com/images/how-to-get-free-robux-fast_GM431946152.pdf
- https://www.chorwacjaapartamenty.com/images/coin-master-hack-pc_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_off0000474b.bin` `d16de8ca96f2d9cfa152a735124b595a3a7a8c52dbcb532f81775f8340984865`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x474B	29436 bytes
`font_01_sfnt_off0000896e.bin` `616583cf15db0724850cf45359e902df9ac37466b92a112f25d4f28d3793db9e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x896E	18248 bytes

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