Malicious PDF — malware analysis report

Static analysis result for SHA-256 e49c335d141da358…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 11:32:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8660d7fbd10cc47fe515cf2a9c111c4d SHA-1: 067b2584f2a72db8c51b70e62228907fd812fb38 SHA-256: e49c335d141da3583fa188a8b623afd1bdc6c291ff51b5f72596448599fba524
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure related to 'Roblox Free Item Codes' and includes an external URI pointing to a potential payload. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be instructing the user to decrypt a password-protected archive, a common tactic to bypass security filters. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.online/app/431946152/roblox-free-item-codes-game-hack
    • http://www.elibrary.perludem.org/repository/free-coins-coin-master-today_GM406889139.pdf
    • http://elibrary.perludem.org/repository/coin-master-spin-cheat_GM406889139.pdf
    • http://www.elibrary.perludem.org/repository/wurst-115-2_GM479516143.pdf
    • http://elibrary.perludem.org//repository/robuxmatch-com-free-robux_GM431946152.pdf
    • http://www.elibrary.perludem.org/repository/minecraft-com-free_GM479516143.pdf
    • http://elibrary.perludem.org//repository/free-spins-coin-master-site-wwwquoracom_GM406889139.pdf
    • http://elibrary.perludem.org/repository/coin-master-hack-app-2021_GM406889139.pdf
    • http://elibrary.perludem.org/repository/coin-master-cheats_GM406889139.pdf
    • http://www.elibrary.perludem.org/repository/free-minecraft-account-and-password_GM479516143.pdf
    • http://www.elibrary.perludem.org/repository/robux-offer-wall_GM431946152.pdf
    • http://www.elibrary.perludem.org/repository/minecraft-free-download-mac-full-version_GM479516143.pdf
    • http://www.elibrary.perludem.org/repository/unlimited-robux_GM431946152.pdf
    • http://www.elibrary.perludem.org/repository/free-attacks-coin-master_GM406889139.pdf
    • http://elibrary.perludem.org/repository/minecraft-clipart-free_GM479516143.pdf
    • http://www.elibrary.perludem.org/repository/free-spins-october-28-2021-coin-master_GM406889139.pdf
    • http://elibrary.perludem.org//repository/free-roblox-clothes-templates_GM431946152.pdf
    • http://elibrary.perludem.org//repository/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://elibrary.perludem.org//repository/how-to-hack-someones-account-on-roblox_GM431946152.pdf
    • http://elibrary.perludem.org/repository/free-minecraft-account-and-password-generator_GM479516143.pdf
    • http://elibrary.perludem.org/repository/paytm-to-pubg-uc_GM1330123889.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051e4.bin
998fbde09c58c84a395fcf6b7c09b7b770c98616ba50e2d5e3d125c815baedf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51E4 25368 bytes
font_01_sfnt_off00008abd.bin
c72c233e0477db5c15587e2c1e6f96ab3255d21c2f787dab6c27132f5893b73f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABD 18488 bytes

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