Malicious PDF — malware analysis report

Static analysis result for SHA-256 9765084abdd7036f…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 05:45:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 12c3289389cf16e668b0dfb5e9a37041 SHA-1: e8cda24b5c1be8e61f47a2ac7b5511cd6119bfd2 SHA-256: 9765084abdd7036f735241fc804388a7ec300e497443e200f85e68870fe63057
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document presents a lure for "free Robux" and "gift cards", directing users to a URL that likely hosts a malicious payload. The presence of a callback lure suggests a secondary phishing or tech support scam attempt. While no scripts were explicitly extracted, the ML classifier and embedded URLs strongly indicate malicious intent, likely involving the download of a second-stage exploit or malware.

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.online/app/431946152/free-robux-gift-card-generator-game-hack
    • https://digilib.stieama.ac.id/repository/free-coins-on-coin-master_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/get-free-spins-for-coin-master_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/minecraft-free-download-linux_GM479516143.pdf
    • https://digilib.stieama.ac.id/repository/daily-coin-master_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/free-robux-android_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/minecraft-bedrock-server-hosting-free_GM479516143.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-spins-free-2021_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/is-tiktok-app-free_GM835599320.pdf
    • https://digilib.stieama.ac.id/repository/rblx-gg-free-robux_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/60-free-spins-coin-master_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-hack-club_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/wurst-download_GM479516143.pdf
    • https://digilib.stieama.ac.id/repository/free-robux-reddit_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-coins-link_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-unlimited-spins-hack_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/mcpe-free-download_GM479516143.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/minecraft-ios-mods_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fc1.bin
020f24268fbb6986a2edc8676941befea3359206f20b27366249610187d4792d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC1 27808 bytes
font_01_sfnt_off00008df7.bin
9c31dcaac4a0b50b5f0fc2170f059f54bc5506f6c6606d446db32e5f0aacf3a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF7 18640 bytes

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