Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac96f21d6d2d0c6…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 09:04:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 64c30c48d79c1514965e126d8a988d9b SHA-1: bef1c432289bf2c67a32fa6b0f3bf1e598f7d150 SHA-256: eac96f21d6d2d0c6b2f76e5a5fcb853fcbbda0cafb9df201cad37fd0ae57676d
102 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and text lures related to game hacks and cheats, specifically for Minecraft and Roblox. The presence of a ML classifier firing and external URI heuristic strongly suggests malicious intent, likely to trick users into downloading malware from the provided links. The document body also contains text that could be interpreted as a callback lure, further supporting a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/479516143/minecraft-hack-app-game-hack
    • https://pt-mataram.go.id/perpustakaan/repository/free-avatar-roblox_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/cmd-hack-roblox-jailbreak_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-hack-robux-on-ipad-2021_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/all-roblox-bloxburg-hack-2021_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/free-roblox-girl-hair-not-a-model-or-decal_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/get-free-robux-com_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-hack-roblox-account-on-phone_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-hack-steal-roblox-accounts_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/what-is-the-secret-code-to-get-free-robux_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/free-coins-for-coin-master_GM406889139.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-hacked-client-download_GM479516143.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/easy-robux_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-hack-2021_GM479516143.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-robux-on-computer-website_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/master-hack-coin_GM406889139.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-codes-2021-real_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/fly-hack-dll-exploit-roblox_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-jailbreak-has-anyone-gotten-on-cheater-island_GM431946152.pdf
    • https://pt-mataram.go.id/perpustakaan/repository/free-coin-master-spins-daily_GM406889139.pdf
    • https://pt-mataram
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032b3.bin
1f992a5b58e8d9936275af6811e33537a94b57e04d68a641540c9077eddae77f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32B3 21744 bytes
font_01_sfnt_off0000621a.bin
c1185779461864b36b9820a1fc6c8f9e9cb6b26e9ea910c27505907d0185e4b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x621A 18204 bytes

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