Malicious PDF — malware analysis report

Static analysis result for SHA-256 387c94762cd463f3…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 06:26:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c8af7718f1e3805a1da9dbead3f0ead4 SHA-1: 2886d515442935b5232904b82ddf70b1c4df335a SHA-256: 387c94762cd463f320b0660ada06356f0d8961c2c43ff494a0bb34a34eb9c9ff
62 Risk Score

Malware Insights

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

The PDF document contains numerous links and mentions of 'free Robux' and 'hacks', indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and embedded URLs further supports this assessment. The document's content and structure suggest it is designed to trick users into clicking malicious links, likely leading to malware download or credential harvesting.

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.co/app/431946152/free-robux-promo-codes-2021-works-game-hack
    • https://perpustakaan.unitomo.ac.id/repository/roblox-island-2-hack_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/roblox-dragon-ball-z-final-stand-zeni-hack_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/roblox-admin-commands-hacks_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/free-instant-catalog-item-roblox_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdf
    • https://perpustakaan.unitomo.ac.id/repository/2021-fe-hacks-roblox_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/roblox-hack-site_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-admin-on-any-roblox-game_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/como-ser-un-hacker-en-roblox_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/hack-roblox-accounts-easy_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/roblox-hack-robuxian-secret-forum-hack_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-live-now_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/cheat-codes-for-bick-cars-on-roblox_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/banditmask-how-to-get-free-robux_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/barren-hacks-roblox_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/roblox-hack-account-download-pc_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/2021-roblox-hacks-ispect_GM431946152.pdf
    • https://perpustakaan.unitomo.ac.id/repository/esp-cheat-engine-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030f0.bin
290657c3da1c6153e9122522d9fe579fbb15c7823127c2675da35999258fcceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30F0 22480 bytes
font_01_sfnt_off00006320.bin
0508ef868404002881eaa04fce37a6cb999b60c4a50fc90eee99dabb34a7bb5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6320 20076 bytes

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