Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ba6978e5756072…

MALICIOUS

PDF

43.2 KB Created: 2021-05-17 07:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 76fbdc7e2a9b8e0e7ea10820a8919607 SHA-1: 02c73e6ef0d78427026703c95ccbb9395c73a043 SHA-256: 58ba6978e57560727db2a790bc11070e475ba0fc4fc42a58fa8da7a539500f8c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, many of which are SEO-optimized and point to sites offering game cheats and hacks. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content. The document body, though partially corrupted, contains references to game hacks and exploits, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/how-to-use-scripts-in-roblox-hack-game-hack
    • https://dientubentre.com/public/upload/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdf
    • https://dientubentre.com/public/upload/files/coin-master-hack-apk-facebook-login_GM406889139.pdf
    • https://dientubentre.com/public/upload/files/tiradas-coin-master_GM406889139.pdf
    • https://dientubentre.com/public/upload/files/easy-ways-to-get-free-robux_GM431946152.pdf
    • https://dientubentre.com/public/upload/files/roblox-hack-unlimited-robux_GM431946152.pdf
    • https://dientubentre.com/public/upload/files/coin-master-free-spin-today_GM406889139.pdf
    • https://dientubentre.com/public/upload/files/how-do-you-hack-minecraft_GM479516143.pdf
    • https://dientubentre.com/public/upload/files/robux-no-human-verification-2021_GM431946152.pdf
    • https://dientubentre.com/public/upload/files/get-robux-now_GM431946152.pdf
    • https://dientubentre.com/public/upload/files/free-robux-for-kids_GM431946152.pdf
    • https://dientubentre.com/public/upload/files/coin-master-free-spin-whatsapp-group-link_GM406889139.pdf
    • https://dientubentre.com/public/upload/files/roblox-com-games-referrer-roblox-player_GM431946152.pdf
    • https://dientubentre.com/public/upload/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • https://dientubentre.com/public/upload/files/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • https://dientubentre.com/public/upload/files/archery-master-3d-coins-hack_GM406889139.pdf
    • https://dientubentre.com/public/upload/files/facebook-coin-master-free-spins_GM406889139.pdf
    • https://dientubentre.com/public/upload/files/coin-master-hack-apk-no-fb-login_GM406889139.pdf
    • https://dientubentre.com/public/upload/files/free-robux-by-watching-ads_GM431946152.pdf
    • https://dientubentre.com/public/upload/files/free-robux-websites-that-actually-work_GM431946152.pdf
    • https://dientubentre.com/public/upload/files/free-games-like-minecraft_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cb4.bin
7568b9fc853b53f9917106b17a8e8727b46f559b1f8178a69a44bc689df6577d
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB4 24792 bytes
font_01_sfnt_off000084a4.bin
fce9e652f89a1af62f774ff2b7937cf54d78de2903c3939778e1916a8682391a
pdf-font-stream PDF embedded font (sfnt) at offset 0x84A4 18932 bytes