Malicious PDF — malware analysis report

Static analysis result for SHA-256 724a648e0ce0dfd9…

MALICIOUS

PDF

34.9 KB Created: 2021-07-09 01:37:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bd6b367d9676de9f24dc8d7c8ac8bc08 SHA-1: 60598365bd45742d13fca6554224dcce8d4038f5 SHA-256: 724a648e0ce0dfd9847ccb39569e46aefcc514e615c607d1250d9ab30ec5e617
62 Risk Score

Malware Insights

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

This PDF document contains multiple embedded and linked URLs, many pointing to IP addresses, that are designed to lure users into downloading game-related cheats or hacks. The ML classifier strongly indicated maliciousness, and the presence of a download button heuristic further supports the malicious intent. The document likely serves as a lure to distribute further malware or unwanted software.

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/sb-game-hacker-coin-master-game-hack
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-spin-free_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-minecraft-texture-packs_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-skins-murder-mystery-2-roblox-2021_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/mc-update_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/minecraft-hacked-client-18_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/is-minecraft-vr-free_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-hackers-list_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/is-it-illegal-to-hack-roblox_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/best-robux-hack-2021_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/my-roblox-avatar_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/claimrbx-free-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-get-free-robux-form-inspect_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-gang-rape_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/aprender-a-hackear-roblox_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-android_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/haktuts-coin-master_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-hack-progamers_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-tix-and-robux-generator-no-survey_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-land-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031de.bin
78004db78021b530f983c8e5b94c3dfa3daa2486dd82e386d95aac361dbc1e0f
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31DE 22984 bytes
font_01_sfnt_off0000657d.bin
6a53dc8f067a419c9eeb2c0c5bc72e0738835f67cea1574c478c8e2ae405105c
pdf-font-stream PDF embedded font (sfnt) at offset 0x657D 18420 bytes