Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5920a126cd077b6…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 09:58:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 76e09a80d1a7447350c592cdb148ad4c SHA-1: 3103069512ef3d5821e989067ac19b694b52c3df SHA-256: d5920a126cd077b62f98eabbcf8dcf127258fffbb25ed9440c23faa1807810cc
82 Risk Score

Malware Insights

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

The document body and embedded URLs indicate a lure for users seeking to hack Roblox accounts, directing them to download a file from http://netcdn.tw/app/431946152/how-to-hack-roblox-passwords-game-hack. The heuristic SE_PASSWORD_ARCHIVE_LURE suggests that the downloaded content may be password-protected to evade security scanning. 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.tw/app/431946152/how-to-hack-roblox-passwords-game-hack
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-free-code-robux-2021_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-how-to-get-free-b-money-on-bloxburg_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/bexggg-free-robux_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-without-human-verification_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-robux-app_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/hunting-simulator-hack-roblox_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-minecraft-maps_GM479516143.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/make-robux_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-hack-exe_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-and-tix-tickets_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-spins-for-coin-master-2021_GM406889139.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/old-roblox-t-shirt-free_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-just-enter-username_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/hack-dragon-ball-super-2-roblox_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/blox-world-free-robux_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-play-paid-roblox-games-for-free_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-no-human-verification-generator_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/free-roblox-clothes-creator_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-jailbreak-money-hack-download-free_GM431946152.pdf
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-build-a-boat-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fcc.bin
009eba445c364b9a7c50e5dca8c79f5250f23c363bab4293d6ad0fc145b493df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCC 22324 bytes
font_01_sfnt_off0000614f.bin
27c2480528306c14fc73cab21edc43c1c48bdb6a9d52717524bf8f54e0cb401c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614F 19148 bytes

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