Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbd29930b4e7f457…

MALICIOUS

PDF

47.1 KB Created: 2021-05-16 23:56:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4ec882d0eb783580373041b790882bc2 SHA-1: c8be614cf40b1958cb094d02e74ce4baa4fea919 SHA-256: cbd29930b4e7f457c4c50e0b7d8953183ce5539bb722a85648fd5efa8fd6e618
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick the user into executing a downloaded file. It also embeds external URLs that likely host malicious payloads. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • 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
  • 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.xyz/app/431946152/what-do-roblox-points-do-game-hack PDF link annotation
    • http://tasleemdubai.com/userfiles/files/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/roblox-account-taker_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a22.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A22 26116 bytes
SHA-256: 9962d6b94b33ad4eb21c7cddec9cd1e8763235653e2438321406ca8daef39f38
font_01_sfnt_off00008735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8735 3608 bytes
SHA-256: 608f0dd4f6bfb6adbccec84228618ee8e4c9e09226d7330efb5300e499d1567f
font_02_sfnt_off000093bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BD 18920 bytes
SHA-256: bcbace7f2968187c9b0e7948c76ec4c5d121751191c9fcebe9b281b5414d3343

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