Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00e91d446a33010…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 08:55:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b99a688c0e95fde3b25b9c8a90f56a88 SHA-1: 13c22bd8500dc745e52dbecd8d8d3968593ab709 SHA-256: d00e91d446a330109b5e2c9e2602d10d720d63e88e09f6c56b9f788ac639804e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.003 Windows Command Shell T1204.002 Malicious File

The PDF contains a lure for game cheats and directs the user to a URL that likely hosts a malicious executable. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document instructs the user to paste content into a command-line interface, likely to execute the downloaded payload. The ML classifier strongly flagged this PDF as malicious.

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.tw/app/431946152/10-robux-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-hack-5-minutes_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/avatar-the-last-airbender-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/radio-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-ninja-legends-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheat-roblox-power-simulator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-reveal-your-hacked-accounts-password-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-all-free-items-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coin-master-spins-without-human-verification_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_off00002f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1C 22028 bytes
SHA-256: 8a1179e94edfa5253f63d9efa515dd75ea6619c87e82a7337f9f5f5d7391117d
font_01_sfnt_off00005fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB9 18828 bytes
SHA-256: 119893438dfdee07160b20114d595d80c7b0a9a0af49c5fc1e20f3c535fc2fc3

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