Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad324267eec003b…

MALICIOUS

PDF

44.3 KB Created: 2021-06-01 03:23:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f3336dade1eda657a9d6a2882e4b1832 SHA-1: 8ae3932059b8d6bddc345061436f30f01304409a SHA-256: 4ad324267eec003be24fda85055796b43d793eff5f9e3658e599e25c3bacbbf2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and text that suggest it is a lure for downloading game hacks. The ML classifier and heuristic firings strongly indicate malicious intent, likely to trick users into downloading a second-stage payload. The presence of 'cmd-hacks-for-roblox_GM431946152.pdf' in the document text and as a URL further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.xyz/app/431946152/roblox-dubliezieren-hack-game-hack
    • https://www.aubay.com/wp-content/uploads/fsqm-files/get-free-tiktok-likes_GM835599320.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/minecraft-name-tag-hacks_GM479516143.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/coin-master-daily-free-spin-app_GM406889139.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-verification_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/minecraft-free-download-chromebook_GM479516143.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/rblx-city-free-robux_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/cmd-hacks-for-roblox_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/daily-free-spins-coin-master_GM406889139.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/huskybuscom-free-robux_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-scam_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-to-cheat-infinite-jump-in-roblox_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/minecraft-xray-hack_GM479516143.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-do-u-get-free-robux_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/free-spins-coin-master-2021_GM406889139.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/minecraft-classic-free_GM479516143.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/cheat-codes-vhicule-simulator-roblox_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/roblox-free-exploits-with-decompiler_GM431946152.pdf
    • https://www.aubay.com/wp-content/uploads/fsqm-files/free-tiktok-comments_GM835599320.pdf
    • https://www.aubay.com/w
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000514e.bin
ffe4889f2587a34ddadc16ca0b99ea0b99d696b26e639aa6426ceba6472ea497		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x514E 24392 bytes
font_01_sfnt_off00008918.bin
be38f465ad22d8fc7aa45ec9e09e5e60d3856af8168c5e5a352519d2c63f70cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8918 18692 bytes

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