Malicious PDF — malware analysis report

Static analysis result for SHA-256 444db56477dd8fdb…

MALICIOUS

PDF

45.5 KB Created: 2021-05-15 06:00:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0dc7d390f7dc19d3cb6720898e86bdd0 SHA-1: 5093fbd6073ddc64391040f3350caec400e147c7 SHA-256: 444db56477dd8fdbc55f90f097c8224fb9a00685c266cf4e664ecb265240ad21
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, likely serving as a lure for users to download malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may also provide password instructions to bypass security measures. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/431946152/free-roblox-accounts-with-robux-2021-game-hack
    • http://www.alrashed-alsaleh.com/userfiles/files/robux-in_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/can-i-have-robux_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-make-clothes-on-roblox-for-free_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/real-working-coin-master-hack_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-hack-uk_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-hackprogamers-com_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-today_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-free-robux_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/robux-free-com_GM431946152.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-hack-download-apk_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-hacks-for-android_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-hacks-no-surveys_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/coinmaster-rewards_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/free-daily-spin-coin-master-game_GM406889139.pdf
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-free-robux-games_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004530.bin
7f459b7f40dcccd5d4c7d2719f34ed787273a84a36aff9589339c426dc0d655b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4530 25580 bytes
font_01_sfnt_off00008044.bin
9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8044 5596 bytes
font_02_sfnt_off00008cec.bin
c054b0c192e62aa8d18573c4a3caef3c11adbf34d317da17e190ba3718f8ceb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEC 19076 bytes

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