Malicious PDF — malware analysis report

Static analysis result for SHA-256 39014f072dbde1bb…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 22:31:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6e6986a8a2ef01fb8c5dea0178c68c2d SHA-1: 9b517e58efb5522316f920f6f5a679387e61d4cf SHA-256: 39014f072dbde1bb8a874a7f81d77e51b4ac5ba1eeb0388c96b7f46da0f802e2
82 Risk Score

Malware Insights

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

The PDF document contains numerous URLs and text related to obtaining free Robux or game hacks for Roblox, acting as a lure. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may instruct the user to download an archive, which is often password-protected to bypass security scans. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it delivering a secondary payload.

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/good-outfits-roblox-for-free-game-hack
    • http://pustaka.fkg.unand.ac.id/repository/how-to-hack-on-roblox-for-robux_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/free-roblox-strucid-codes_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/free-roblox-c4d-lightroom_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/30-free-robux_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/free-shirts-in-roblox-catlog_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/dinero-infinito-en-bloxburg-roblox-hack_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/why-is-robux-not-free_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/free-online-robux-generatorhttp-bitiy-2gcisvw_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/minecraft-build-hacks_GM479516143.pdf
    • http://pustaka.fkg.unand.ac.id/repository/hectic-plays-free-robux_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/how-to-stop-roblox-from-closing-when-hacking_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/hack-para-roblox-jailbreak-2021_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/roblox-bc-for-free-2021_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/game-is-infected-roblox-hacker_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/roblox-assassin-hack-generator_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/utiliser-des-cheat-roblox_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/upside-correctional-facility-roblox-hacked_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/hacking-is-allowed-roblox_GM431946152.pdf
    • http://pustaka.fkg.unand.ac.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fd5.bin
43f2d1885598ce9c1facd963143b20f686454224f2e2312e21db743e6c4f0979		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD5 22608 bytes
font_01_sfnt_off00006277.bin
545550aa7fead16bec7a6ab19b780b1677b09ed3f7d1f2542c405bfbc9008d9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6277 19188 bytes

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