Malicious PDF — malware analysis report

Static analysis result for SHA-256 83a06bb9aafaed69…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 22:22:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2e5c4da8dda64bfb1bcb20070fcbced3 SHA-1: 21839b02d5b8024511e2be8e350426098c43db4f SHA-256: 83a06bb9aafaed69c4b94f0d1f23474b73707f8d69b9054a1208fd1f0c0f3c6b
62 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a document body that promotes hacking game accounts, specifically for Coin Master and Roblox. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it contains external URIs, including one pointing to a raw IP address, likely serving as a lure for users to download further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.tw/app/406889139/como-hackear-coin-master-2021-espaol-game-hack
    • http://111.68.26.74/widyapustaka/repository/earn-robux-now_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-audio-hacker-in-the-server_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-menu-download-pc_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-spin-coin-master-app-download_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/make-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-without-verification_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-help-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/hack-notoriety-roblox-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/i-hacked-the-roblox-app_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/robuxy-com-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/hacker-hair-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/como-ser-un-hacker-en-house-of-keys-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-medieval-warfare-reforged-how-to-hack_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-scripts-list_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-code-hack_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/free-roblox-account-information_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-phantom-forces-aimbot_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-generator-online-no-survey-no-download_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/welcome-to-roblox-account-hacker_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003048.bin
c86c4fd8ca225dc38743260d6f0241ff7c98d268474c4f48417fe6b2f1b0320f
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3048 23132 bytes
font_01_sfnt_off0000646e.bin
022fdbbbf18e3894d325d1979130fd1bca618ff86b17635f3537e40c663d359d
pdf-font-stream PDF embedded font (sfnt) at offset 0x646E 18916 bytes