Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca707dbd205da30…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 12:47:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b5421c181f0379a56b16f42ec5e1829b SHA-1: 803f463f6005bde63513018b426f9bf73a89bba6 SHA-256: 7ca707dbd205da301dc53a6da7e1fe3b6e120ebfa0f435d749657d9748fc221e
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that lead to sites offering 'free Robux' or similar game-related cheats, indicating a lure for potentially malicious downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs, including one pointing to a raw IP address, supports this assessment. While no scripts were explicitly extracted, the document's structure and content suggest it's designed to trick users into downloading further malware or visiting phishing sites.

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/431946152/free-robux-only-username-no-human-verification-game-hack
    • http://36.94.36.7/elib/repository/give-me-robux-now_GM431946152.pdf
    • http://36.94.36.7/elib/repository/how-to-get-free-robux-inspect-element-august-2021_GM431946152.pdf
    • http://36.94.36.7/elib/repository/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://36.94.36.7/elib/repository/free-robux-on-phone_GM431946152.pdf
    • http://36.94.36.7/elib//repository/free-unlimited-coin-master-400-spin-link_GM406889139.pdf
    • http://36.94.36.7/elib//repository/free-coin-master-spins-daily_GM406889139.pdf
    • http://36.94.36.7/elib//repository/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • http://36.94.36.7/elib/repository/roblox-com-free-promo-codes_GM431946152.pdf
    • http://36.94.36.7/elib/repository/roblox-online-free_GM431946152.pdf
    • http://36.94.36.7/elib//repository/free-roblox-generator_GM431946152.pdf
    • http://36.94.36.7/elib//repository/free-roblox-clothes-codes_GM431946152.pdf
    • http://36.94.36.7/elib/repository/how-to-hack-roblox-flood-escape-2-no-downloads_GM431946152.pdf
    • http://36.94.36.7/elib//repository/rbxdemon_GM431946152.pdf
    • http://36.94.36.7/elib/repository/minecraft-pe-free-apk_GM479516143.pdf
    • http://36.94.36.7/elib/repository/pastebin-roblox-hack-free-robux_GM431946152.pdf
    • http://36.94.36.7/elib/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://36.94.36.7/elib//repository/minecraft-mod-menu_GM479516143.pdf
    • http://36.94.36.7/elib//repository/moonactive-free-spins-2021_GM406889139.pdf
    • http://36.94.36.7/elib/repository/coin-master-free-spins-daily-1-ga_GM406889139.pdf
    • http://36.94.36.7/elib//repository/minecraft-free-download-laptop_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fad.bin
777349897ee83e5c76298720d7288c2257151ef2fe754651e90b583b7d668fd1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAD 22340 bytes
font_01_sfnt_off000061a5.bin
2aa3163e32aa61887c262fca8289404382398ed533c0aa8410485c934e17860b
pdf-font-stream PDF embedded font (sfnt) at offset 0x61A5 19588 bytes