PDF malware analysis — malicious · 4aafac7c9c691ac4

MALICIOUS

PDF

53.3 KB Created: 2021-06-08 12:41:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 0cc5c52419b9e642b90e39b56168e7c4 SHA-1: 4d27889386a50a8d7eaaba0b9e40d0d451342569 SHA-256: 4aafac7c9c691ac44acce9bcf9b87d9f1e3bd6a5371129f9451403432923e76f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA to lure the user into interacting with a malicious link. The embedded URL, https://netcdn.tw/app/431946152/cheat-codes-for-skywars-roblox-game-hack, is likely the next stage of the attack, potentially leading to a malware download or phishing page. No scripts were extracted, limiting the analysis of the execution flow.

Machine Learning

Nyx PDF Classifier malicious score 0.9616

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.tw/app/431946152/cheat-codes-for-skywars-roblox-game-hack
- http://solidcommunication.ch/images/how-many-villages-are-in-coin-master_GM406889139.pdf
- http://solidcommunication.ch/images/free-minecraft-packs_GM479516143.pdf
- http://solidcommunication.ch/images/robloxmatchcom-free-robux_GM431946152.pdf
- http://solidcommunication.ch/images/free-spins-on-coin-master-2021_GM406889139.pdf
- http://solidcommunication.ch/images/how-do-i-get-minecraft-for-free_GM479516143.pdf
- http://solidcommunication.ch/images/mistplay-robux_GM431946152.pdf
- http://solidcommunication.ch/images/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdf
- http://solidcommunication.ch/images/minecraft-java-edition-free-download_GM479516143.pdf
- http://solidcommunication.ch/images/how-do-you-hack-booga-booga-on-roblox_GM431946152.pdf
- http://solidcommunication.ch/images/tiktok-free-shares_GM835599320.pdf
- http://solidcommunication.ch/images/coin-master-hack-dot-xyz_GM406889139.pdf
- http://solidcommunication.ch/images/coin-master-spin-hack-trick_GM406889139.pdf
- http://solidcommunication.ch/images/minecraft-free-download-ipad_GM479516143.pdf
- http://solidcommunication.ch/images/prison-life-roblox-hacks_GM431946152.pdf
- http://solidcommunication.ch/images/is-minecraft-free_GM479516143.pdf
- http://solidcommunication.ch/images/free-roblox-gfx_GM431946152.pdf
- http://solidcommunication.ch/images/coin-master-strategy_GM406889139.pdf
- http://solidcommunication.ch/images/free-daily-spins-coin-master_GM406889139.pdf
- http://solidcommunication.ch/images/free-roblox-gift-card-codes-2021-unused_GM431946152.pdf
- http://solidcommunication.ch/images/coin-master-free-coins-and-spins-app_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000054d4.bin` `1b55c35d6a8209d4ff5e9c0d70ca913ea205dccb04d1ec11055abc0178e65960`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x54D4	26888 bytes
`font_01_sfnt_off00009321.bin` `0b188308ab0e7ffce9913d63d697a586f2937cafc51a771db38e3a566cd37e24`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9321	7420 bytes
`font_02_sfnt_off0000ab91.bin` `4f9976b24764f90ad0f3ae63d907dc19a5d16ed79d3a02e203daadeab5c14776`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB91	19136 bytes

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