Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44eb0ed6ee3878d…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 05:58:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 63b16ef7d0e55a6446aae3a0631f3e53 SHA-1: 41a029fc13d6c1f5b841d8f1ab49204f4aace09e SHA-256: c44eb0ed6ee3878d5d0cad2f7fcf9980d888ea2275d2720c95d3713edb754292
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains lures for game cheats and free currency, directing users to download a file from a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a download button heuristic further supports a malicious intent. Although no scripts were explicitly extracted, the document's structure and content suggest it's designed to trick users into downloading and executing a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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 http://netcdn.co/app/431946152/hack-roblox-bee-swarm-simulator-2021-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-speed-hack-without-cheat-engine-dll_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/tiktok-free-real-followers_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robuxlive-stream-robux-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-in-obby_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-script-executor-for-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheat-item-book-in-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-daily-free-spins-link_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
font_00_sfnt_off00002ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBC 22276 bytes
SHA-256: 172e74ebf41d62ee7b28ec8352830043053d297fd0ad4fa9edc053f630e120df
font_01_sfnt_off00006038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6038 19848 bytes
SHA-256: 87b5201fd9850092534a9ad27e3763099ef0f27a819c640b5f9f17f14aa4b677

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