Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c2296166973b88f…

MALICIOUS

PDF

46.6 KB Created: 2021-05-15 09:33:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 05fca78cbdb54136882f7b2d90591257 SHA-1: 7b83750b15ad5426ed09c363ded6f2f540cec928 SHA-256: 4c2296166973b88fb95c4552174f23040ded61147d33f32e5a12b060eaa60456
102 Risk Score

Malware Insights

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

The document contains a critical heuristic firing for requesting recovery secrets, combined with multiple embedded URLs pointing to game hacks and cheats. The ML classifier also flagged the PDF as malicious. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-and-cards-game-hack, suggests a lure for in-game currency, likely to trick users into providing credentials or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/406889139/coin-master-free-spins-and-cards-game-hack
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/grab-points-login_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-without-verification_GM406889139.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/toolbox-premium-apk_GM479516143.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/roblox-hack-2021_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/minecraft-alt-accounts-free_GM479516143.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/best-free-roblox-outfits_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/what-is-wurst_GM479516143.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-no-verification_GM406889139.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/minecraft-diamond-finder-hack_GM479516143.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-apk_GM406889139.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/claimrobux-net_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-coin-master-hack-no-verification_GM406889139.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/what-is-a-robux_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-robux-discord_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/hack-coin-master-android-game_GM406889139.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/oprewards-free-robux_GM431946152.pdf
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f1d.bin
7a30608b2fa2045826e1eb1a9d0d18d1debd13ece3c77fae6c6d2689e833ff0a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F1D 25516 bytes
font_01_sfnt_off00008a77.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A77 2880 bytes
font_02_sfnt_off00009461.bin
7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9461 18060 bytes

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