Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6574cccb4bbc72a…

MALICIOUS

PDF

44.3 KB Created: 2021-06-09 14:05:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 029654911cbf6932db484734a485f6a6 SHA-1: 1234b813d0ae1d0238c16c9a5de5c59056783f64 SHA-256: a6574cccb4bbc72a9ef3dd6825d9ed809c7147fde27dca1978dfccc36644fde6
142 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are SEO-optimized and point to pages related to game hacking and cheats. The presence of 'cmd-game-hack' in a URL and the 'SE_LOLBIN_RUN_COMMAND' heuristic suggest an attempt to trick users into executing commands. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of links designed to appear legitimate but likely lead to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/hack-roblox-with-cmd-game-hack
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-blox-watch-on-roblox_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/coin-master--hack_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/free-coins-coin-master-hack_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/minecraft-cheats-pc-2021_GM479516143.pdf
    • https://perpustakaan.itda.ac.id/repository/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdf
    • https://perpustakaan.itda.ac.id/repository/coin-master-cards-hack_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/coin-master-fb-free-spins-link_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-app_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/sites-for-free-spins-for-coin-master_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/roblox-phantom-forces-wall-hack_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/hack-the-coin-master_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/roblox-bgs-hacks_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/minecraft-free-download-mobile_GM479516143.pdf
    • https://perpustakaan.itda.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/hacks-for-roblox-prison-life_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdf
    • https://perpustakaan.itda.ac.id/repository/hack-coin-master-using-cheat-engine_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/roblox-saber-simulator-hack-script_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-hair-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ddd.bin
7269d90e705121c4a4c4524c9b0191135f7cc4b9f215c3dd332e057a1fa490e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DDD 25776 bytes
font_01_sfnt_off000087d0.bin
3092b8410fef5d0b6df2c6c77f8119ba784b432573a37afc361c2b044d14af56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87D0 19204 bytes

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