Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a9afd014e123c6c…

MALICIOUS

PDF

46.0 KB Created: 2021-06-11 00:51:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fe3b7624d6eb7b83a47f4dd2f82f5fdd SHA-1: 5f5b209952cd4873e3aaf201df9b136fe6674928 SHA-256: 4a9afd014e123c6c98eb9009813293212a64c2a18df0a7e556540dcc93e7201c
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs pointing to external resources, some of which are hosted on an IP address, indicating a potential download or redirection to malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure reinforces the malicious intent. The document body and embedded URLs suggest a lure related to game cheats or free in-game items, likely leading to a malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/comment-cheater-sur-roblox-pc-game-hack
    • http://111.68.26.74/widyapustaka/repository/minecraft-free-online-unblocked_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/rbxoffers-earn-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/play-minecraft-online-free_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/minecraft-for-ipad-free_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/inappropriate-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-2021-free-spins_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/rbx-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/unlock-my-games-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-2021_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/robux-hack_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-gen_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-do-you-get-free-stuff-on-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-here_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-codes-no-verification_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-minecraft-account-and-password-2021_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-catalog-free-oo_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/hacks-for-coin-master-game_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005391.bin
efcad00500dd096e2116792d8377e13323e5eeb0ad790308e6dba34c2e7b97f7
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5391 27396 bytes
font_01_sfnt_off00008ffd.bin
c0faabe9f2e89f84bfa921e7acfb5f0990ada6e3a309ff5391c821b6152005e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFD 18836 bytes