Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d211ebf5c699318…

MALICIOUS

PDF

34.5 KB Created: 2021-07-09 10:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 30817b6d5065d5ae0e6f7f5d087aadf6 SHA-1: c3bcb2dbeee910f3f57f2550d893e30bc6e3692f SHA-256: 2d211ebf5c699318be0875e2e56c40a4356c069e6d46c8656ce7ea19d627ec74
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document contains numerous links to external websites that promise free in-game currency and hacks for popular games. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may instruct users to copy and paste content into a shell, suggesting an attempt to trick users into executing malicious commands. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves social engineering through fake offers, likely leading to the download of further malicious content or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/apps-that-give-you-free-robux-game-hack
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-get-free-shields-on-coin-master_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/ww-robux_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-free-attack-hack_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master-link_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/descargar-hacks-para-roblox-2021-sin-parchear_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/jjsploit-roblox-hack_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/best-free-roblox-executor_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/counter-roblox-hacks_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-free-robux-giver_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-roblox-generator_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-get-unlimited-robux_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-2021_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-free-spin-realme-products_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-get-free-shirts-on-roblox_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/rbx-earn_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-today_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000306f.bin
dc7f99a2d2091214bb6c6490bb8c792660febc0a3c1da0be88b58f29d29d32a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x306F 21772 bytes
font_01_sfnt_off0000603c.bin
44687920bbab424739eb00f0c10a6a4a3701389ccd8aaf990bb054a3fc46e25a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603C 19560 bytes

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