Malicious PDF — malware analysis report

Static analysis result for SHA-256 d24549b9d1f11de8…

MALICIOUS

PDF

43.9 KB Created: 2021-05-12 16:10:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d991eef9c66701171ac09a6bc8c2bf12 SHA-1: 64e67538fd5cc746b9f43321b6ede39197bbce36 SHA-256: d24549b9d1f11de80cdb2f7e0deada832bf615f1db0e6a5eb32feb9d63176a87
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA and explicitly requests recovery secrets, indicating a phishing or scam attempt. It also embeds external URIs pointing to potentially malicious content, such as 'https://netcdn.xyz/app/406889139/coin-master-free-link-2021-game-hack'. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a high-risk document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-link-2021-game-hack
    • http://www.les2alpes-location.com/images/coin-master-free-spins-hack-2021_GM406889139.pdf
    • http://www.les2alpes-location.com/images/coin-master-free-cards_GM406889139.pdf
    • http://www.les2alpes-location.com/images/hack-to-protect-village-on-coin-master_GM406889139.pdf
    • http://www.les2alpes-location.com/images/how-to-get-free-robux-2021_GM431946152.pdf
    • http://www.les2alpes-location.com/images/roblox-free-draw_GM431946152.pdf
    • http://www.les2alpes-location.com/images/free-robux-quiz_GM431946152.pdf
    • http://www.les2alpes-location.com/images/how-to-get-free-robux-com_GM431946152.pdf
    • http://www.les2alpes-location.com/images/minecraft-windows-10-edition-free_GM479516143.pdf
    • http://www.les2alpes-location.com/images/free-robux-without-human-verification-real_GM431946152.pdf
    • http://www.les2alpes-location.com/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdf
    • http://www.les2alpes-location.com/images/roblox-generator-no-verification_GM431946152.pdf
    • http://www.les2alpes-location.com/images/free-robux-promo-codes-2021_GM431946152.pdf
    • http://www.les2alpes-location.com/images/www-roblox-com-robux_GM431946152.pdf
    • http://www.les2alpes-location.com/images/minecraft-server-free-trial_GM479516143.pdf
    • http://www.les2alpes-location.com/images/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://www.les2alpes-location.com/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdf
    • http://www.les2alpes-location.com/images/how-do-you-hack-minecraft_GM479516143.pdf
    • http://www.les2alpes-location.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://www.les2alpes-location.com/images/coin-master-links-free-spins_GM406889139.pdf
    • http://www.les2alpes-location.com/images/how-to-hack-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004af1.bin
667672340e81e7616202a030288dd7d0343bac34a9d87e17a54d642812641373		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF1 27880 bytes
font_01_sfnt_off0000894a.bin
be459003f2db1a934c49859962f2962ce704e042ee0985c73311b64c11e09449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x894A 18284 bytes

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