Malicious PDF — malware analysis report

Static analysis result for SHA-256 930ed2fbb09fca25…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 20:36:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8fbbc3f41b97c983a544d4ee50ff0d11 SHA-1: c8bb58b9d74c700285880a7fe203574124fe8984 SHA-256: 930ed2fbb09fca250c7645c53b0ab8aa85cc27ed1c5981dd26e3f6ca69710a03
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a document body that explicitly advertises free Roblox items and hacks. The primary URL, http://netcdn.tw/app/431946152/free-roblox-hair-to-wear-game-hack, is likely a lure to download a malicious payload. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for user deception and potential malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/431946152/free-roblox-hair-to-wear-game-hack
    • https://perpustakaan.iahntp.ac.id/repository/how-to-hack-roblox-in-1-min_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/robux-rewards_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-obby-by-elevanoz_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdf
    • http://perpustakaan.iahntp.ac.id/repository/free-hair-roblox_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-mod-version-free-download-ios_GM406889139.pdf
    • https://perpustakaan.iahntp.ac.id/repository/i-want-to-break-free-roblox-version_GM431946152.pdf
    • https://perpustakaan.iahntp.ac.id/repository/free-roblox-accounts-with-robux-no-pin_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/bird-simulator-roblox-cheats_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdf
    • http://perpustakaan.iahntp.ac.id/repository/roblox-robux-generator-2021_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-pet-food-free_GM406889139.pdf
    • https://perpustakaan.iahntp.ac.id/repository/how-to-get-roblox-for-free-on-ipad_GM431946152.pdf
    • https://perpustakaan.iahntp.ac.id/repository/how-to-cheat-in-roblox-guess-that-song_GM431946152.pdf
    • https://perpustakaan.iahntp.ac.id/repository/roblox-shorts-free_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdf
    • http://perpustakaan.iahntp.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/roblox-free-robux-hack_GM431946152.pdf
    • http://perpustakaan.iahntp.ac.id/repository/spin-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f67.bin
cca67c9bfed9e3559ea282868181ab90f5f5cfe5c7d740d364d3ab0e4aba1a76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F67 22104 bytes
font_01_sfnt_off00006086.bin
6830364f4dd1ddd86c6562c867680beb6ccb518dd817f0071f92a4a80892b398		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6086 18968 bytes

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