Malicious PDF — malware analysis report

Static analysis result for SHA-256 11de771692f4d03f…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 02:35:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 030b86384d900f1fbd85ecf9243b7aed SHA-1: 187122a7a3eac4e14547f8a903918d6a441099d5 SHA-256: 11de771692f4d03f2881339d1418760d9bfc72cd50a094d5621f4fdcf4c9fe13
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and text referencing 'Coin Master Unlimited Spins Hack', indicating a lure for users to download further malicious content. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URIs and the overall theme suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://netcdn.tw/app/406889139/coin-master-unlimited-spins-hack-game-hack
    • http://217.165.206.12/userfiles/files/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/coin-master-free-spin-27_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/flip-master-free-coins_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/twitter-coin-master-free-spins-link_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdf
    • http://217.165.206.12/userfiles/files/get-free-spins-link-in-coin-master_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdf
    • http://217.165.206.12/userfiles/files/can-you-really-hack-coin-master_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/free-likes-on-tiktok-no-verification_GM835599320.pdf
    • http://217.165.206.12/userfiles/files/coin-master-free-spins-instagram_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/release-boku-no-roblox-remastered-free-lvl_GM431946152.pdf
    • http://217.165.206.12/userfiles/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdf
    • http://217.165.206.12/userfiles/files/pokemon-go-free-trades_GM1094591345.pdf
    • http://217.165.206.12/userfiles/files/coin-master-game-hack-link_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/robux-free-gift-card_GM431946152.pdf
    • http://217.165.206.12/userfiles/files/hack-coin-master-xyz_GM406889139.pdf
    • http://217.165.206.12/userfiles/files/free-robux-today_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fd6.bin
532a5681d19c99b4327c04cf603960eabbc68ba9efe5c19ead1b04bc6e093a08
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FD6 23092 bytes
font_01_sfnt_off000063de.bin
358dc4db68bada18430270b8c441743941245708799d83374dd1d97c12f95da1
pdf-font-stream PDF embedded font (sfnt) at offset 0x63DE 18876 bytes