Malicious PDF — malware analysis report

Static analysis result for SHA-256 f546739189f8f86f…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 12:59:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3b52ed8d647d83c49e24661008f4fcd7 SHA-1: 6caa92290f78981e98997035d257b3e7789065a1 SHA-256: f546739189f8f86f412290488378b5aa62c1188a7e04d330251bc862f36e1eb2
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a link farm, strongly suggesting it is designed to redirect users to external sites offering game hacks and cheats. The ML classifier and PDF heuristics confirm the malicious nature of the document. The presence of a 'download button' lure further supports the intent to trick users into downloading potentially harmful files.

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-phantom-forces-hack-dll-game-hack
    • http://sttlets.education/senayan//repository/free-spin-coin-master-game_GM406889139.pdf
    • http://sttlets.education/senayan/repository/coin-master-hack-no-human-verification_GM406889139.pdf
    • http://sttlets.education/senayan//repository/tiktok-free-hashtags_GM835599320.pdf
    • http://sttlets.education/senayan/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdf
    • http://sttlets.education/senayan/repository/roblox-free-exploits-2021_GM431946152.pdf
    • http://sttlets.education/senayan/repository/get-free-robux-2021-no-human-verification_GM431946152.pdf
    • http://sttlets.education/senayan/repository/roblox-hack-client-pc-download_GM431946152.pdf
    • http://sttlets.education/senayan/repository/how-to-hack-coin-master-apple_GM406889139.pdf
    • http://sttlets.education/senayan/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdf
    • http://sttlets.education/senayan/repository/pokemon-go-free-coins-hack_GM1094591345.pdf
    • http://sttlets.education/senayan/repository/roblox-free-iland-royal_GM431946152.pdf
    • http://sttlets.education/senayan/repository/comment-hacker-un-compte-roblox-2021_GM431946152.pdf
    • http://sttlets.education/senayan/repository/roblox-2021-hack_GM431946152.pdf
    • http://sttlets.education/senayan//repository/easy-coin-master-hack_GM406889139.pdf
    • http://sttlets.education/senayan/repository/free-robux-codes-2021-and-how-to-imput-them_GM431946152.pdf
    • http://sttlets.education/senayan/repository/how-to-hack-your-rank-on-roblox_GM431946152.pdf
    • http://sttlets.education/senayan/repository/daily-free-spins-coin-master-heaven_GM406889139.pdf
    • http://sttlets.education/senayan/repository/jamaica-roblox-free_GM431946152.pdf
    • http://sttlets.education/senayan//repository/coin-master-free-coins-and-spins-app_GM406889139.pdf
    • http://sttlets.education/senayan/repository/quick-robux-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e5.bin
6e5f4b55dd55ae12c598494d68cf1623a6b8e20dad5c015ed1afdf68b78305fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x30E5 21916 bytes
font_01_sfnt_off000060fe.bin
6662cfb164dac1a6ddc8c488030f1a01c2ce78e6460d064f8e253e7fa27f136d
pdf-font-stream PDF embedded font (sfnt) at offset 0x60FE 19672 bytes