Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0f83e822a6c689c…

MALICIOUS

PDF

34.3 KB Created: 2021-06-17 19:38:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6c39ac4936b488e82d6444694ee0abb6 SHA-1: 675c26beb41f145675ebaafee0b22b5637757f12 SHA-256: a0f83e822a6c689c361fbbaf59a8001367d6626771d7caa7b4e2fa49704e70ef
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document body and embedded URLs promote a lure for free Robux, a common tactic for credential harvesting or malware distribution. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the content may be a password-protected archive, intended to bypass security filters. The ML classifier strongly indicates maliciousness, and the external URI points to a likely payload download site.

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-roblox-logins-password-game-hack
    • https://library.institutpendidikan.ac.id/repository/how-to-make-free-robux-on-roblox_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/free-robux-app-real_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/minecraft-life-hacks_GM479516143.pdf
    • https://library.institutpendidikan.ac.id/repository/roblox-com-hack_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/hack-roblox-2021-robux_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-lvl-in-shinobi-life-roblox_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-in-roblox-vehicle-simulator_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/coin-master-daily-gifts_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-likes-on-tiktok_GM835599320.pdf
    • https://library.institutpendidikan.ac.id/repository/robux-cheats-2021_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/www-coin-master-hack-tk_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/free-roblox-generator-for-roblox_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/google-coin-master-free-spins_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/free-robux-master_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/free-robux-for-kids-no-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc3.bin
c57e25d69a07152dbd220ced99cbb634ad74882c6ed65a3eec42ca3e31c9c17a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC3 22012 bytes
font_01_sfnt_off0000607a.bin
7f832a99ae0a1385f30181025bb7e50d175cf6c150c81980af243623ba5483a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607A 19216 bytes

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