Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d0088a329185a4…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 20:30:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8bdcfbf5d872b1f257abf3c47d666f06 SHA-1: 3b9745db052d0915bee0f6817369be99e62b68f5 SHA-256: f0d0088a329185a4ab3f0f0aad4bf29b913f8f4344146ec7c8b0ee727afa3e52
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and references to popular games, suggesting a lure for users seeking free in-game items. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs, including one pointing to an IP address, indicates a potential download or redirection to a malicious site. The document body itself contains these URLs, reinforcing the phishing and download lure.

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/free-robux-real-2021-game-hack
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-websites-that-work_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-roblox-veify-hat_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/minecraft-free-school_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/robux-pro-hack_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-serveys_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-spiderman-mask-roblox_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/gernrate-free-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-haktuts_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/minecraft-xbox-one-free_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-robuxian_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/clothes-for-free-roblox_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/android-fast-robux-hack_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-coin-master-stuff_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/phantom-forces-roblox-hack-money_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/minecraft-apk-android-free_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-new-roblox-accounts_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d12.bin
8ef476048e3906dfb0e6f398cc13a2737b249b12412d068d75581fedf90830bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x2D12 21864 bytes
font_01_sfnt_off00005d6e.bin
0a56f38ee828cc338b4ecf6fd69a1c4ab782641ccce74c835442ee7dbad06135
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6E 19192 bytes