PDF malware analysis — malicious · 4573dd1f30713e8f

MALICIOUS

PDF

41.4 KB Created: 2021-05-12 23:49:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 6b988513b22b7ea8cdf441fd556c10c6 SHA-1: af228d4132d5b76c429666f624901b920124d053 SHA-256: 4573dd1f30713e8f50705bc0f3be0c1de4cc98c521b4427c90aa7c9f8b0054d5

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a fake CAPTCHA lure, designed to trick users into downloading malicious content. It also includes numerous embedded URLs pointing to game-related cheats and freebies, suggesting a social engineering tactic to distribute further malware or unwanted applications. The ML classifier strongly flagged this PDF as malicious.

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/406889139/coin-master-attack-hack-game-hack
- https://morishita-tc.com.tw/image/data/files/coin-master-hack-app-android_GM406889139.pdf
- https://morishita-tc.com.tw/image/data/files/coin-master-freebies_GM406889139.pdf
- https://morishita-tc.com.tw/image/data/files/minecraft-114-4-download-free_GM479516143.pdf
- https://morishita-tc.com.tw/image/data/files/coin-master-free-cards-2021_GM406889139.pdf
- https://morishita-tc.com.tw/image/data/files/microsoft-roblox-rewards_GM431946152.pdf
- https://morishita-tc.com.tw/image/data/files/minecraft-cheats-pc-2021_GM479516143.pdf
- https://morishita-tc.com.tw/image/data/files/hacks-para-coin-master_GM406889139.pdf
- https://morishita-tc.com.tw/image/data/files/free-robux-survey_GM431946152.pdf
- https://morishita-tc.com.tw/image/data/files/roblox-dominus-free_GM431946152.pdf
- https://morishita-tc.com.tw/image/data/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdf
- https://morishita-tc.com.tw/image/data/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
- https://morishita-tc.com.tw/image/data/files/how-do-i-get-free-robux_GM431946152.pdf
- https://morishita-tc.com.tw/image/data/files/daily-free-spin-link-for-coin-master_GM406889139.pdf
- https://morishita-tc.com.tw/image/data/files/roblox-free-robux-com_GM431946152.pdf
- https://morishita-tc.com.tw/image/data/files/free-robux-just-enter-username_GM431946152.pdf
- https://morishita-tc.com.tw/image/data/files/coin-master-hacks-no-human-verification_GM406889139.pdf
- https://morishita-tc.com.tw/image/data/files/get-coin-master-free-spin_GM406889139.pdf
- https://morishita-tc.com.tw/image/data/files/roblox-games-free_GM431946152.pdf
- https://morishita-tc.com.tw/image/data/files/hack-coin-master-without-verification_GM406889139.pdf
- https://morishita-tc.com.tw/image/data/files/to-get-free-robux_GM431946152.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_off00004841.bin` `ae1170bf571095d4fb39f2ee62d19751d5ef00f46dea0b1611fe8d7f08dd275a`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4841	24980 bytes
`font_01_sfnt_off00008127.bin` `70399db0e332628e5b8235b330fa983a1f520a6186e18c08c1293487a921032f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8127	17716 bytes

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