Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef4d0db5a4235d2…

MALICIOUS

PDF

34.4 KB Created: 2021-06-21 02:56:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a5460d985320cd12ee6b131de4a5c082 SHA-1: 5579c6a52706ab58fc3dea371154cceef565a741 SHA-256: 0ef4d0db5a4235d2de5ea6c5051c55ab0fd8928ce02ef83e75dcedd954158451
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free Robux and game hacks, directing users to download files from provided URLs. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document likely instructs the user to execute commands, potentially to download and run a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-games-in-roblox-100-real-game-hack PDF link annotation
    • https://sensorcamera-tw.com/upload/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-cheat-in-minerh-eaven-roblox_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/freepsy-roblox_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-legit-free-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-free-robux-codes-pastebin_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/bugmenot-roblox-free_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-pokemon-cheats_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/pubg-uc-low-price_GM1330123889.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E90 22476 bytes
SHA-256: 83a81a6a7ff4a87e514dde5fa6efa8037a407c82b5eea7fe2f349c094c037eda
font_01_sfnt_off000060a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A6 19328 bytes
SHA-256: 934db9e7455b87a7685bd3c3d815b14bc009d31d10feed9391c299e84400f8bd

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