Malicious PDF — malware analysis report

Static analysis result for SHA-256 be344c8c24895962…

MALICIOUS

PDF

44.0 KB Created: 2021-06-04 06:17:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 93a422430c79b0887f550f3d175c6512 SHA-1: 625cef0b7a1b35bddb5349397cfb52a4aa120b1d SHA-256: be344c8c248959626661f608923be31dad6edc5f2e1286f7631269037b1158e8
122 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA and a remote support tool lure to trick the user into downloading a file from the URL https://netcdn.online/app/479516143/wurst-client-112-2-game-hack. The ML classifier strongly indicates maliciousness, and the presence of multiple related URLs suggests a phishing or malware distribution campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.online/app/479516143/wurst-client-112-2-game-hack
    • http://libsmpn1balongpo.sch.id//repository/do-robux-generators-work_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-apps_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-coin-master-spins-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-easy_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/i-want-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/spin-free-coin-master_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-game-free-spin_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-unlimited-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/roblox-cheat_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/minecraft-bedrock-hacks_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/robux-free-c_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-human-verification_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/is-minecraft-free-on-pc_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/roblox-hacked-version-download_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-version-download-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-no-root_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005150.bin
5d402d10b61e772a4333655bfd7f792f6e9c7e949987c01c05f2a73fb0c7ca61		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5150 25228 bytes
font_01_sfnt_off00008a64.bin
a2db8b8844227355f70e02ed3b0d086fa8e909038a0d40425af5cd6ece26b610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A64 17980 bytes

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