Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3cb0ec3a46a7b7…

MALICIOUS

PDF

49.0 KB Created: 2021-06-09 01:20:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6599a3caad7047b99903b3d9af787f8c SHA-1: 5ae72eb9069c0bd9592a4491b6d98942975145e9 SHA-256: ee3cb0ec3a46a7b793feca816c65c50caf9ee47df29f83b2177250cb23ea9673
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The document presents itself as a game hack for Roblox, luring the user to click on embedded URLs that likely lead to malicious downloads. It also contains instructions to copy and paste content into a shell, indicating an attempt to trick the user into executing commands. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

Heuristics 5

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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-one-piece-millenium-hacks-game-hack PDF link annotation
    • http://io24.com.ar/images/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-speed-change-cheat-engine_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/collect-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-account-that-have-robux-that-are-100-real_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-pin-codes-pastebin_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/cheat-command-terminal-railways-roblox-admin-pass_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005e28.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5E28 25992 bytes
SHA-256: 6a27472cf91f0a4cb0bbb754e5a3afaa4246bb7ade71d1c682c47b564766abfc
font_01_sfnt_off00009b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B0B 19052 bytes
SHA-256: f135fa1c9b99b468bd46909c29aaeea5884f2b30f8b24b8fe63adee790a2de61

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