Malicious PDF — malware analysis report

Static analysis result for SHA-256 75fdbad3f350fa71…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 02:00:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b190b23a0fc5332b9e6f024e39c73f61 SHA-1: 0ad47a7efc9b9e923e67f51e2dc1a0d7bb10ff82 SHA-256: 75fdbad3f350fa712b429f7f77ecc14a42a8056f5178964b80209d9530eb1b56
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document exhibits characteristics of a malicious lure, specifically a link farm designed to direct users to potentially harmful content related to game hacks and cheats. The presence of numerous external links, including one pointing to 'roblox-hack-giant-hand-game-hack', strongly suggests an attempt to trick users into downloading or accessing malware. The ML classifier also flagged this PDF with high confidence.

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-hack-giant-hand-game-hack
    • https://htdvn.com/public/upload/files/how-do-you-hack-a-server-on-roblox_GM431946152.pdf
    • https://htdvn.com/public/upload/files/coin-master-fan-page-free-spins_GM406889139.pdf
    • https://htdvn.com/public/upload/files/coin-master-links-to-get-free-spins_GM406889139.pdf
    • https://htdvn.com/public/upload/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdf
    • https://htdvn.com/public/upload/files/free-minecraft-servers-to-join_GM479516143.pdf
    • https://htdvn.com/public/upload/files/minecraft-hacked-client-18_GM479516143.pdf
    • https://htdvn.com/public/upload/files/unlock-all-guns-in-roblox-phantom-forces-hack_GM431946152.pdf
    • https://htdvn.com/public/upload/files/roblox-bloxburg-tips-and-cheats_GM431946152.pdf
    • https://htdvn.com/public/upload/files/toolbox-for-minecraft-windows-10_GM479516143.pdf
    • https://htdvn.com/public/upload/files/coin-master-spins-2021_GM406889139.pdf
    • https://htdvn.com/public/upload/files/roblox-hack-generator_GM431946152.pdf
    • https://htdvn.com/public/upload/files/easy-way-to-get-free-robux_GM431946152.pdf
    • https://htdvn.com/public/upload/files/roblox-hack-me-robux_GM431946152.pdf
    • https://htdvn.com/public/upload/files/free-minecraft-resource-packs_GM479516143.pdf
    • https://htdvn.com/public/upload/files/free-robux-generator_GM431946152.pdf
    • https://htdvn.com/public/upload/files/pokemon-go-free-walk-ios_GM1094591345.pdf
    • https://htdvn.com/public/upload/files/how-do-u-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://htdvn.com/public/upload/files/free-robux-codes-generator-no-survey_GM431946152.pdf
    • https://htdvn.com/public/upload/files/how-to-hack-roblox-jailbreak-noclip-2021_GM431946152.pdf
    • https://htdvn.com/public/upload/files/roblox-free-exploits_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002de8.bin
6969fad07bf1bfb455ed1f99d6b415963d199c4d87f444671df853b30a1e9ddb
pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE8 22336 bytes
font_01_sfnt_off00005fb8.bin
c6ffc7f4eb5b7b7610bb64e04c6e8b07ef34a42f7801375f97d242c8fec1cb02
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB8 19052 bytes