PDF malware analysis — malicious · 29810a7de5ef92f8

MALICIOUS

PDF

42.5 KB Created: 2021-05-17 20:07:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 85bccd305fa3b679bdf075beb87c22dc SHA-1: 61e8cabaa4eb81faade7109a284b6f8c650a5d31 SHA-256: 29810a7de5ef92f8871c876d813530e6a99cb9847814a67649b42f6ec2ab1e23

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious links. The embedded URL and numerous other URLs point to sites offering game-related cheats or hacks, suggesting a social engineering scam. The ML classifier also flagged this PDF as malicious with high confidence.

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/free-spins-and-coins-coin-master-game-hack
- https://ktphuhung.com/public/upload/files/free-robux-without-verification_GM431946152.pdf
- https://ktphuhung.com/public/upload/files/coin-master-free-coins_GM406889139.pdf
- https://ktphuhung.com/public/upload/files/roblox-apocalypse-rising-hack_GM431946152.pdf
- https://ktphuhung.com/public/upload/files/coin-master-free-spins-link-download-hack_GM406889139.pdf
- https://ktphuhung.com/public/upload/files/ways-to-get-free-robux-2021_GM431946152.pdf
- https://ktphuhung.com/public/upload/files/free-robux-no-survey_GM431946152.pdf
- https://ktphuhung.com/public/upload/files/how-do-u-get-robux_GM431946152.pdf
- https://ktphuhung.com/public/upload/files/roblox-t-shirt-free_GM431946152.pdf
- https://ktphuhung.com/public/upload/files/free-robux-com-2021_GM431946152.pdf
- https://ktphuhung.com/public/upload/files/wurst-115-2_GM479516143.pdf
- https://ktphuhung.com/public/upload/files/free-spins-coin-master-2021-glitch_GM406889139.pdf
- https://ktphuhung.com/public/upload/files/coin-master-jackpot-hack_GM406889139.pdf
- https://ktphuhung.com/public/upload/files/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdf
- https://ktphuhung.com/public/upload/files/free-robux-survey_GM431946152.pdf
- https://ktphuhung.com/public/upload/files/roblox-hack-unlimited-robux_GM431946152.pdf
- https://ktphuhung.com/public/upload/files/daily-coin-master-free_GM406889139.pdf
- https://ktphuhung.com/public/upload/files/coin-master-generator-free_GM406889139.pdf
- https://ktphuhung.com/public/upload/files/legit-coin-master-hack-october-2021_GM406889139.pdf
- https://ktphuhung.com/public/upload/files/coin-master-free-soins_GM406889139.pdf
- https://ktphuhung.com/public/upload/files/free-robux-please_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_off00004c2a.bin` `13ebbd83805862d2db136d57f535dd20aaf0ab4364e723dce309c89c813aaabd`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C2A	25388 bytes
`font_01_sfnt_off00008496.bin` `d4954d2d00bde9f6a1061857a61d2c62c1ae360f44744af150ee923481526d51`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8496	18060 bytes

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