Malicious PDF — malware analysis report

Static analysis result for SHA-256 581526089e0dec17…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 02:05:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ec6e20abd6b8aad1d866a625634e552e SHA-1: 1ebc6cedd8c95dc5f8aa2c9bd09e0d2b670acd82 SHA-256: 581526089e0dec17f21e989a680303f534866fa9be37c0a12736bf3c1f7f27ae
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a heuristic firing for a PDF link farm, indicating a likely attempt to redirect users to malicious content. The document body, though partially corrupted, suggests a lure related to game hacks and cheats, further supported by the 'SE_DOWNLOAD_BUTTON' heuristic. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/431946152/free-roblox-clothes-and-hair-boy-game-hack
    • http://sttlets.education/senayan/repository/how-to-hack-roblox-games-downloads_GM431946152.pdf
    • http://sttlets.education/senayan//repository/coin-master-free-spins-link-2021-app_GM406889139.pdf
    • http://sttlets.education/senayan//repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://sttlets.education/senayan//repository/how-to-get-robux-easy_GM431946152.pdf
    • http://sttlets.education/senayan/repository/coin-master-hack-app-android-download_GM406889139.pdf
    • http://sttlets.education/senayan//repository/coin-master-free-spins-cheat-codes_GM406889139.pdf
    • http://sttlets.education/senayan/repository/games-to-get-free-robux_GM431946152.pdf
    • http://sttlets.education/senayan/repository/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdf
    • http://sttlets.education/senayan/repository/how-to-get-free-purple-items-on-billionaire-simulator-roblox_GM431946152.pdf
    • http://sttlets.education/senayan//repository/coin-master-free-spin-group_GM406889139.pdf
    • http://sttlets.education/senayan/repository/roblox-speed-hack-2021-march_GM431946152.pdf
    • http://sttlets.education/senayan//repository/can-you-actually-get-free-robux_GM431946152.pdf
    • http://sttlets.education/senayan/repository/roblox-verification_GM431946152.pdf
    • http://sttlets.education/senayan//repository/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • http://sttlets.education/senayan/repository/best-free-coin-master-spins_GM406889139.pdf
    • http://sttlets.education/senayan/repository/adopt-me-roblox-cheat-codes-twitter_GM431946152.pdf
    • http://sttlets.education/senayan/repository/can-you-get-roblox-for-free-on-xbox-360_GM431946152.pdf
    • http://sttlets.education/senayan/repository/roblox-hack-menu-2021_GM431946152.pdf
    • http://sttlets.education/senayan//repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdf
    • http://sttlets.education/senayan/repository/free-spins-coin-master-app-ios_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003108.bin
1de7a46c46e62c1271ecadf65ef2676eb36210b6b245c1e082714d3304aa9ccf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3108 22160 bytes
font_01_sfnt_off00006254.bin
3880c8c43f5b52009256d6e3c8afdb450d3a527ad0178c9bbbed3d834a854ee3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 19392 bytes

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