Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2af6ea0bb8194b2…

MALICIOUS

PDF

46.0 KB Created: 2021-06-11 07:54:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fd2ed2bfd91f4ed9c655c107a9b3cce4 SHA-1: 6d0ea74bef23876923db29993ba86040bac30d8e SHA-256: b2af6ea0bb8194b20f71c937b71201ab3f51d57c7e1e7ec9d045fd84d2dff326
82 Risk Score

Malware Insights

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

The document contains lures related to free Robux and game hacks, directing users to external URLs. A heuristic firing indicates the document instructs the user to copy and paste content into a shell execution context, suggesting an attempt to trick the user into running commands. This likely facilitates the download and execution of a second-stage payload from one of the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • 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 https://netcdn.tw/app/431946152/free-robux-2021-easy-no-working-game-hack
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/boku-no-roblox-remastered-quirk-hack_GM431946152.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/roblox-robux-hack-no-human-verify_GM431946152.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/gain-robux_GM431946152.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-download-hack_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/roblox-noclip-and-speed-hack_GM431946152.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-game-free-play-online_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/free-robux-on-ipad_GM431946152.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/free-spin-and-coin-blogspot-com_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/free-robux-no-generator_GM431946152.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/free-roblox-generator_GM431946152.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/free-coins--spins-coin-master_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/how-can-you-get-robux_GM431946152.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-hack-xyz-download-free_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-root-hack_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/hack-coin-master-game_GM406889139.pdf
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/mathep_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005468.bin
39a2ad79657ddae36881289fc11b5555841fbdff707281d05ba5123986d5ea4a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5468 24868 bytes
font_01_sfnt_off00008d3e.bin
7607bd092b237c9aee4145e3bdb9b7b3a95ddc85c7d3f1102f5477b36f90a07a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3E 19600 bytes

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