Malicious PDF — malware analysis report

Static analysis result for SHA-256 1432faa8bb4e3cdc…

MALICIOUS

PDF

43.0 KB Created: 2021-05-16 22:49:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 11732a7fa281d5b42aa28d1a851bd77c SHA-1: d7aa859d00b8cbd52cdb797f17962d27498be32d SHA-256: 1432faa8bb4e3cdc3e22076fe7013758b05734c6f640dc178edb389c812616b7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The document contains an external URI pointing to a suspicious URL, and a machine learning classifier flagged it as malicious. The presence of a 'clipboard command execution lure' heuristic indicates the document likely instructs the user to execute commands, potentially via PowerShell, to download and run a secondary payload. The document body, though partially corrupted, suggests a lure related to game hacks or free items.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/479516143/how-to-install-minecraft-for-free-game-hack
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-hack-app_GM431946152.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/to-get-free-robux_GM431946152.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-spins-today-39_GM406889139.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/wurst-client-18-9_GM479516143.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/where-to-get-free-robux_GM431946152.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-spins-1701-20_GM406889139.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-login-hack_GM431946152.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/daily-free-spins-coin-master-app_GM406889139.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/minecraft-build-hacks_GM479516143.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/minecraft-server-hacks_GM479516143.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/safe-hack-for-coin-master-android_GM406889139.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-spin-and-coin_GM406889139.pdf
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/robux-hack-tools_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c55.bin
36dfeca8c81827a0d195c3d9a35367608e8d2c94c99c412793f3db4213076b9a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C55 25352 bytes
font_01_sfnt_off000086d2.bin
5e3ba7e4cd3ca4e9461728952bafe8ac7745d23e1bc3d1385ef5be4278fd35be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86D2 17948 bytes

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