Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ff756766246eb9…

MALICIOUS

PDF

46.3 KB Created: 2021-06-10 19:06:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8efef967b64df7e5e3a7f260c7dda4bb SHA-1: db8d87bd20ae6bf8544d18d924ce57ba668436a7 SHA-256: 88ff756766246eb9aa927b59100a969a0e37aeee6864192bbcd1ce552bda9917
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple URLs pointing to sites offering game cheats and hacks, suggesting a lure for users seeking such content. The presence of 'cmds-in-roblox_GM431946152.pdf' in the document body and associated URLs indicates a potential attempt to trick users into downloading or executing malicious files disguised as game-related tools. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.tw/app/431946152/cheat-roblox-lumber-tycoon-2-2021-game-hack
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-hack-case-clicker-20-roblox_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-tiktok-video_GM835599320.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/bloxpink-free-robux_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-minecraft-account-generator_GM479516143.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spins_GM406889139.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-cmds-in-roblox_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-robux-xbox-one-2021_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coin_GM406889139.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-hack-accounts-on-roblox-easy-method_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-get-free-robux-credit_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/robux-hack-real-one_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-admin-pizza-roblox_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/dungeon-quest-roblox-hack_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/roblox-hacks-xray_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/minecraft-iphone-free_GM479516143.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/hacks-for-de-oride-isle-sanatorium-roblox_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/free-robux-no-bot-verification_GM431946152.pdf
    • http://ttikhuruthang.bt/wp-content/uploads/fsqm-files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdf
    • http://ttikhuruthang.bt/wp-co
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005353.bin
63536f97f59297c0a94b3ba3ed3c87bed82cd3e7d13c34ca6f099c8f3cbc1bc3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5353 25804 bytes
font_01_sfnt_off00008f5b.bin
eadec847ebd61c14b651870f56e966ea4c09bef0da1c2d2e4c8d3b995aa7fb0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5B 19264 bytes

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