Malicious PDF — malware analysis report

Static analysis result for SHA-256 97377dd62e165a0e…

MALICIOUS

PDF

35.2 KB Created: 2021-06-27 00:29:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: aecac1c956d74342a4d9c4141e2df9c7 SHA-1: 2f028bb669604223326f5e4c1b0a9471c1d31fd3 SHA-256: 97377dd62e165a0ececbb3bac17838a26326ab5b4f6ad383d26d7b628a244fb2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous URLs and text strings related to game cheats and hacks, such as 'free Robux' and 'free Minecraft realms'. The heuristic 'SE_LOLBIN_RUN_COMMAND' indicates the presence of command-line tokens within the document text, suggesting an attempt to execute commands. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, but the overall pattern suggests a lure for downloading potentially unwanted or malicious applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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-robux-pagedemo-co-game-hack
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-minecraft-realms-to-join_GM479516143.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/pastebin-free-robux-by-agarminer_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-roblox-hair-codes_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/pig-master-coin-master-free-spin_GM406889139.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/boku-no-roblox-all-legendary-quirks-hack_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/real-roblox_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/minecraft-tiktok-hacks_GM479516143.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/hack-free-spin-coin-master_GM406889139.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-put-cheats-into-big-paintball-on-roblox_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/instant-robux_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/rbx-gg-free-robux_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-official-website_GM406889139.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-free-spins-hack-download_GM406889139.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-robux-no-verify-2021_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-use-cmd-to-hack-roblox_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdf
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-do-you-hack-roblox_GM431946152.pdf
    • http://www.alajwakh.com/u
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030f0.bin
39314006c4266ba82654dbb16e30908369be251ceef49229a48c23ec3210e134		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30F0 22612 bytes
font_01_sfnt_off000063c7.bin
4bad99e9b077bc0e4ae04039837ec2ce20e49767867d6c8099ff4ecb29160f2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C7 19304 bytes

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