Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d99cf56721c8726…

MALICIOUS

PDF

46.0 KB Created: 2021-06-08 19:28:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 550fc84687dfc741fe0f024a5f1ed806 SHA-1: 5a7fe45d9dbd55f000184742adee8475eebf4945 SHA-256: 5d99cf56721c872694d8fdfb83dfbba0d85d4bfb27b6c7145865a58219f74489
62 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a visual download button, strongly suggesting a lure to download a malicious file. The ML classifier also flagged this PDF as malicious with high confidence. The primary URL points to a file named 'roblox-admin-hack-dll-game-hack', indicating a likely attempt to trick users into downloading malware disguised as a game hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/roblox-admin-hack-dll-game-hack
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/coin-master-free-download-for-pc_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-games-hack_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/free-24-7-minecraft-server_GM479516143.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/free-robux-2021_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-3533-android-hack_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/free-tiktok-likes-generator_GM835599320.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/coin-master-free-spin-codes_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/free-robux-app-real_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/real-free-robux-codes_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/coinmaster-blogspot_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/free-op-minecraft-servers_GM479516143.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/minecraft-free-download-android-apk_GM479516143.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000533d.bin
d305db88d3ebb1ceb124293118fcffdf2a9779a8c345c96db1a45f48835e9b51		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x533D 28428 bytes
font_01_sfnt_off00008f48.bin
0c6e7d70db2f321272f43cfdf106bef268dbd6e199c0619d973b9619948de7e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F48 18904 bytes

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