Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a77f2b3951baba…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 09:56:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2adc0a714aaed90bf0645b14adeb6f26 SHA-1: 08eaeb93e30b5d706aae432bca6f27ac1642985b SHA-256: d0a77f2b3951babab6cdc8e1e88123e48fbe11de6aa9650069eecaea45184d20
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to IP addresses, that are disguised as download links for game cheats and in-game currency. The ML classifier strongly indicated maliciousness, and the presence of multiple download lures suggests an attempt to trick users into downloading further malware or unwanted software. 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/431946152/robloxhacks-game-hack
    • http://110.78.114.242/ckfinder/userfiles/files/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/2021-roblox_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-hack-pro-gamers-com_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-hack-mod_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/blox-fish-free-robux_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/hack-para-sharkbite-roblox_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-hack-lumber-tycoon-2-script-inserter_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/hack-roblox-real_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/will-minecraft-ever-be-free_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/tiktok-likes-free-trial_GM835599320.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-help-free-robux_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/minecraft-java-free-download_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-bloxburg-money-hack_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/worst-client_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-hack-download_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-l-robux-2021-roblox_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/woman-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e61.bin
692def0791807b19ec4e5139932548d3db377d9975905e646730527f0a35ffe4
pdf-font-stream PDF embedded font (sfnt) at offset 0x2E61 22524 bytes
font_01_sfnt_off00006099.bin
2ccea82525463c59d3ef013baba30ec334edef503592fdffe768c3dcf14999d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6099 18820 bytes