Malicious PDF — malware analysis report

Static analysis result for SHA-256 b48ddd8224bca6bb…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 08:50:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 70b33f5ab8e186a108eda52b5a317730 SHA-1: a4eae8818073bedeeaa3057f11d3e79f9236616f SHA-256: b48ddd8224bca6bb5ebf16b1a380adad701586d4de432689f0acd5fd7cfbf009
62 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a clickable URI pointing to a raw IP address, all of which are related to game hacks and free in-game currency. The ML classifier strongly flagged this PDF as malicious, and the presence of download-related text further supports a malicious intent to trick users into downloading unwanted applications. 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/rbxdemon-game-hack
    • http://110.232.83.89/slimsppks/repository/hacking-apps-for-roblox_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/20-free-spins-coin-master_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/free-coins-spins-on-coin-master_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/minecraft-java-free-trial_GM479516143.pdf
    • http://110.232.83.89/slimsppks/repository/free-daily-spins-coin-master_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/how-to-play-coin-master_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/how-do-you-get-free-roblox_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/free-online-generator-for-coin-master_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/daily-coin-master-free-spins_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/earn-free-robux_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/coin-master-hacks-for-android_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/free-robux-2021-no-human-verification_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/roblox-group-free-robux_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/hack-coin-master-game-apk-download_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/today-coin-master-free-coins-link_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/coin-master-coins_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-spins-coin-master_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/roblox-hack-vehicle-simulator_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/free-robux-generator-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d61.bin
cdbda69501cd5d8796027aa2caaed163bca034c88bf16a55f06723c314f6856c
pdf-font-stream PDF embedded font (sfnt) at offset 0x2D61 22076 bytes
font_01_sfnt_off00005e26.bin
c8a2595e802ed22d3f92a782be696ae3de60702987379a605de61e4dc59e7030
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E26 18848 bytes