PDF malware analysis — malicious · 7a7a7967c41af289

MALICIOUS

PDF

46.8 KB Created: 2021-05-16 20:14:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 479313199cb0dc7147e5c6dd6fa258c4 SHA-1: 032cb921fde7117c45b1ce49699178f21a677af7 SHA-256: 7a7a7967c41af289ec87737abccac5b0cb830cbfb615014c0576a448681cf7ab

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a fake CAPTCHA lure to trick users into clicking a link for 'free Robux'. The embedded link points to a URL that likely hosts a malicious payload or further phishing content. The ML classifier also flagged this PDF as malicious with a high confidence score.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

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/free-robux-without-human-verification-game-hack
- http://force-seniorklub.dk/images/how-to-get-free-robux-without-any-verification_GM431946152.pdf
- http://force-seniorklub.dk/images/free-coins-app-for-coin-master_GM406889139.pdf
- http://force-seniorklub.dk/images/free-spin-coin-master-link-2021_GM406889139.pdf
- http://force-seniorklub.dk/images/coin-master-hack-spin-generator-tool_GM406889139.pdf
- http://force-seniorklub.dk/images/free-daily-spins-coin-master-2021_GM406889139.pdf
- http://force-seniorklub.dk/images/free-clothing-on-roblox_GM431946152.pdf
- http://force-seniorklub.dk/images/roblox-font-free_GM431946152.pdf
- http://force-seniorklub.dk/images/roblox-free-robux-com_GM431946152.pdf
- http://force-seniorklub.dk/images/coin-master-daily-free-spins-today_GM406889139.pdf
- http://force-seniorklub.dk/images/roblox-free-robux_GM431946152.pdf
- http://force-seniorklub.dk/images/free-minecraft-packs_GM479516143.pdf
- http://force-seniorklub.dk/images/coin-master-free-link_GM406889139.pdf
- http://force-seniorklub.dk/images/how-to-get-free-robux-2021_GM431946152.pdf
- http://force-seniorklub.dk/images/minecraft-wurst-hacked-client_GM479516143.pdf
- http://force-seniorklub.dk/images/coin-master-hack-mod-apk-2021-download_GM406889139.pdf
- http://force-seniorklub.dk/images/how-to-download-minecraft-for-free_GM479516143.pdf
- http://force-seniorklub.dk/images/roblox-hack-2021_GM431946152.pdf
- http://force-seniorklub.dk/images/coin-master-daily-free-spins-link-2021_GM406889139.pdf
- http://force-seniorklub.dk/images/how-to-hack-people-on-roblox_GM431946152.pdf
- http://force-seniorklub.dk/images/google-how-do-you-get-free-robux_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off0000489b.bin` `d28bc8dc3aedcad128e093808212876a0bb0662d2ab341226e58ce77715c994c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x489B	26884 bytes
`font_01_sfnt_off000086d0.bin` `18024f4b72cad9e8fe6b9382f56dfa9578ef3104902ade2e6dbc4a36f3d0700d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86D0	3204 bytes
`font_02_sfnt_off000091d4.bin` `69162c0303826e3a88150cee7b6b12b50ba56e04bc46253c0e5eb9f80ac8a399`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91D4	19224 bytes

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