Malicious PDF — malware analysis report

Static analysis result for SHA-256 532054c9d97c50b7…

MALICIOUS

PDF

32.9 KB Created: 2021-06-18 15:09:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d250dce94cd36118a1225a55a41a11fb SHA-1: 58201739d83b4a1e5aaa1eb312c194f331db9d5e SHA-256: 532054c9d97c50b7b8774a4343a8b3f3c8c16cb5ec23e46651e3232dff3a14c0
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on domains associated with distributing game cheats and hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a "download button" heuristic further supports a malicious intent to trick users into downloading files. The document body explicitly mentions "Roblox Server Hack Download" and lists multiple URLs related to game exploits and cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.co/app/431946152/roblox-server-hack-download-game-hack
    • http://magnipsor.su/images/rbx-gg-free-robux_GM431946152.pdf
    • http://magnipsor.su/images/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://magnipsor.su/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • http://magnipsor.su/images/robux-games_GM431946152.pdf
    • http://magnipsor.su/images/free-modded-minecraft-server-hosting_GM479516143.pdf
    • http://magnipsor.su/images/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • http://magnipsor.su/images/how-to-get-free-shirts-on-roblox-2021_GM431946152.pdf
    • http://magnipsor.su/images/free-minecraft-bedrock-server-hosting_GM479516143.pdf
    • http://magnipsor.su/images/coin-master-daily-spin-free_GM406889139.pdf
    • http://magnipsor.su/images/roblox-builders-club-hack-free-download_GM431946152.pdf
    • http://magnipsor.su/images/free-robux-codes-2021-not-used_GM431946152.pdf
    • http://magnipsor.su/images/how-can-i-get-minecraft-for-free_GM479516143.pdf
    • http://magnipsor.su/images/get-free-robux-2021-samsung_GM431946152.pdf
    • http://magnipsor.su/images/free-robux-just-click_GM431946152.pdf
    • http://magnipsor.su/images/flamingo-free-shirt-templates-roblox_GM431946152.pdf
    • http://magnipsor.su/images/how-to-get-err-face-for-free-roblox_GM431946152.pdf
    • http://magnipsor.su/images/get-free-spins-on-coin-master_GM406889139.pdf
    • http://magnipsor.su/images/coin-master-free-spins-app_GM406889139.pdf
    • http://magnipsor.su/images/coin-master-hack-without-downloading-apps_GM406889139.pdf
    • http://magnipsor.su/images/roblox-hacks-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c10.bin
4fc16a29dc8dded6ab0f3b670cd85bfa93084d001a2ba86128ad0fca1f899cbf
pdf-font-stream PDF embedded font (sfnt) at offset 0x2C10 21420 bytes
font_01_sfnt_off00005b08.bin
8949a9bd18facc0c1d01bafb2c8b8aedb7ea7ea6c29813f697363b9844a4a03e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B08 19088 bytes