Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d04c9f2f39401a…

MALICIOUS

PDF

35.6 KB Created: 2021-07-01 17:51:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d84c7fd8aec3b832fe83d81ba663b2d4 SHA-1: 7d6f8af73bf34ef8dd113b698e4c33a770b91484 SHA-256: 01d04c9f2f39401aa79f025fc524972e91e1acb09710f57dddb2622284b86189
82 Risk Score

Malware Insights

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

The document contains numerous embedded URLs and a prominent link to 'http://netcdn.co/app/431946152/free-robux-3-pastbin.com-game-hack', suggesting a lure for downloading potentially malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be instructing users to open 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 0.9980

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 http://netcdn.co/app/431946152/free-robux-3-pastbin.com-game-hack
    • http://library.gkigadingserpong.org/repository/roblox-prison-life-hack-download-2021_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/pubg-uc-vpn-apk_GM1330123889.pdf
    • http://library.gkigadingserpong.org/repository/roblox-dino-cheat_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/free-minecraft-mods-for-pc_GM479516143.pdf
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-apk-35-13_GM406889139.pdf
    • http://library.gkigadingserpong.org/repository/hacks-for-roblox-mac-that-works-with-overdrive_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/how-to-get-free-items-in-the-roblox-catalog_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/free-robux-com-roblox_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-in-30-seconds_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/roblox-password-hacker-2021_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/roblox-girl-avatar_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/how-to-get-bloxburg-for-free-on-roblox_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/roblox-cheats-xbox-one_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/how-to-download-minecraft-for-free-on-windows_GM479516143.pdf
    • http://library.gkigadingserpong.org/repository/roblox-robux-generator-tool_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/roblox-robux_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/levvvel-coin-master_GM406889139.pdf
    • http://www.library.gkigadingserpong.org/repository/roblox-cheat-money-lumber-tycoon-2_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/rbxfree-com-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031d8.bin
e4993ebd128d7873a2ede03548b3b83b998869023049a2caa575e258230a7065		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31D8 22624 bytes
font_01_sfnt_off000064a1.bin
5a34230b14cf8942da9a06debaadbac39f5649d8db1976453faaa9956d8a8653		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A1 19596 bytes

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