Malicious PDF — malware analysis report

Static analysis result for SHA-256 4822d73928ddde1e…

MALICIOUS

PDF

43.4 KB Created: 2021-05-17 23:38:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d9d87b51090ce0e44c1e4399f2fa1b25 SHA-1: 867764037cde0a7f1ec7679184a013c3dcafa439 SHA-256: 4822d73928ddde1e0e87fd9e7052ee463a09c06410b80a7786d4a674e5352062
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs and a clickable URI pointing to an IP address, all of which are related to game cheats and free currency. The ML classifier strongly flagged this PDF as malicious, indicating it likely serves as a lure to download further malicious content or redirect users to phishing sites. No scripts were extracted, but the presence of numerous game-related lures suggests a social engineering tactic to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-uk-game-hack
    • http://110.164.163.187/ckfinder/userfiles/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-account-hacker-tool_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/download-minecraft-bedrock_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/blox-land-free-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/get-free-spins-coin-master_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/best-free-spins-for-coin-master_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-cracked-minecraft-server-hosting_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-hack-roblox-jailbreak_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-spin-today_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-free-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/i-want-free-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/claimrbx-free-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/minecraft-java-edition-free-download_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/is-free-robux-real_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-hack-apk-download_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/cool-minecraft-hacks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bd6.bin
1145fc2e1c1cb57aabcadb2c73d191c73443fea043ad7d8ae0b4a21e6db76a64
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD6 25460 bytes
font_01_sfnt_off00008776.bin
aaae38b64eb30a0fe4220b35513ba1ff9605c019ef2dc3651a924d8ad355a85d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8776 18240 bytes