PDF malware analysis — malicious · d0ae5e727b746457

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 21:12:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: aad5e45e1470259c38fee496a735ed2b SHA-1: 08441a3ca7807a9c72a04953b2b36328cf78017a SHA-256: d0ae5e727b7464574bdbfc10f631cfcde60bb8fca48ac191a776f0848089e558

142 Risk Score

Malware Insights

MITRE ATT&CK

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

The document displays a fake CAPTCHA and requests sensitive recovery secrets, indicating a social engineering attempt to trick the user. It also contains numerous embedded URLs pointing to potentially malicious files, suggesting it acts as a lure to download further malware. The ML classifier strongly flagged this PDF as malicious.

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/master-8-ball-pool-free-coins-game-hack
- http://educhina.mn/editor/files/free-minecraft-accounts-2021_GM479516143.pdf
- http://educhina.mn/editor/files/coin-master-cheats-for-free-spins_GM406889139.pdf
- http://educhina.mn/editor/files/free-robux-not-fake_GM431946152.pdf
- http://educhina.mn/editor/files/wurst-18-9_GM479516143.pdf
- http://educhina.mn/editor/files/huskybuckscom-free-robux_GM431946152.pdf
- http://educhina.mn/editor/files/coin-master-free-spin-codes_GM406889139.pdf
- http://educhina.mn/editor/files/minecraft-pc-download-free-full-version_GM479516143.pdf
- http://educhina.mn/editor/files/free-robux-easy_GM431946152.pdf
- http://educhina.mn/editor/files/free-coin-master-spin-app_GM406889139.pdf
- http://educhina.mn/editor/files/hack-xp-net-generators-coin-master_GM406889139.pdf
- http://educhina.mn/editor/files/oprewards-login_GM431946152.pdf
- http://educhina.mn/editor/files/coin-master-free-cards_GM406889139.pdf
- http://educhina.mn/editor/files/claimrbx-free-robux_GM431946152.pdf
- http://educhina.mn/editor/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdf
- http://educhina.mn/editor/files/coin-master-hack-mod-apk-free-download_GM406889139.pdf
- http://educhina.mn/editor/files/coin-master-hack-without-root_GM406889139.pdf
- http://educhina.mn/editor/files/coins-master-hacks_GM406889139.pdf
- http://educhina.mn/editor/files/free-roblox-hack-us_GM431946152.pdf
- http://educhina.mn/editor/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
- http://educhina.mn/editor/files/free-robux-hack_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_off0000479e.bin` `5bcde447f5f07476c10c1054ce1a8ca3bb960971d0dff6fb5a856b691737479b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x479E	24988 bytes
`font_01_sfnt_off00008173.bin` `6e0a537e63e8d7ae493ffba7f694c0e5cbb50b5e44b8f04c82ad864b2eef269a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8173	18364 bytes

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