PDF malware analysis — malicious · ec8e3d80a9f8fc6c

MALICIOUS

PDF

42.9 KB Created: 2021-05-13 21:41:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 7fb98f5664c6029786ce545d19e368ed SHA-1: 781bd676498208ef1d28e7dacbea3f50ccf6a2e7 SHA-256: ec8e3d80a9f8fc6c8b51892ccc38a0606b92d7168511722ba4a3377e601049b4

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA and requests recovery secrets, aiming to trick users into clicking malicious links for in-game cheats. The embedded URLs and document body content strongly suggest a phishing lure for game-related exploits. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 5

Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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-free-spin-link-today-16-11-2021-game-hack
- http://posterprintshop.nl/images/can-you-get-free-robux-on-roblox_GM431946152.pdf
- http://posterprintshop.nl/images/coin-master-hacks-xyz_GM406889139.pdf
- http://posterprintshop.nl/images/coin-master-free-spin-27_GM406889139.pdf
- http://posterprintshop.nl/images/free-coin-master-spins_GM406889139.pdf
- http://posterprintshop.nl/images/minecraft-pc-free_GM479516143.pdf
- http://posterprintshop.nl/images/free-robux-without-downloading-anything_GM431946152.pdf
- http://posterprintshop.nl/images/coin-master-hack-activegamer_GM406889139.pdf
- http://posterprintshop.nl/images/coin-master-hack-spin-160-pro_GM406889139.pdf
- http://posterprintshop.nl/images/blox-fun-info_GM431946152.pdf
- http://posterprintshop.nl/images/pasos-para-hackear-coins-master_GM406889139.pdf
- http://posterprintshop.nl/images/coin-master-free-spins-link-haktuts_GM406889139.pdf
- http://posterprintshop.nl/images/free-robux-that-actually-works-2021_GM431946152.pdf
- http://posterprintshop.nl/images/level-coin_GM406889139.pdf
- http://posterprintshop.nl/images/how-to-free-robux_GM431946152.pdf
- http://posterprintshop.nl/images/how-to-get-free-robux-promo-codes_GM431946152.pdf
- http://posterprintshop.nl/images/coin-master-hack-september-2021_GM406889139.pdf
- http://posterprintshop.nl/images/coin-master-hack-xyz_GM406889139.pdf
- http://posterprintshop.nl/images/ways-to-get-free-robux-2021_GM431946152.pdf
- http://posterprintshop.nl/images/a-lot-of-robux_GM431946152.pdf
- http://posterprintshop.nl/images/free-robux-games-that-actually-work-2021_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_off000049ee.bin` `122d7078e7230aecfd5b8e89433f6b5a17bda32457d8ded141ba505bb747ddf2`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49EE	24832 bytes
`font_01_sfnt_off00008320.bin` `e4d439b3b5f6932fbef0b3c3f4e884e2be76520c2aafdd6e5f347e1a4fd448d8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8320	18980 bytes

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