Malicious PDF — malware analysis report

Static analysis result for SHA-256 12a0e4ebfc5960dd…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 07:23:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 020c132fbf927a3284d76ca59d5a28d7 SHA-1: a648b8a563988ca203cc61aa089504c66919d479 SHA-256: 12a0e4ebfc5960dd47b9973d40a619a16b2b339dfbf279317410ff659d2758ff
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and text fragments related to game cheats and hacks, strongly suggesting a lure for users to download malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The primary URL identified, http://netcdn.tw/app/431946152/jailbreak-roblox-hack-game-hack, is likely the initial download point for a secondary payload.

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/jailbreak-roblox-hack-game-hack
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-get-free-spins-for-coin-master_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/hacked-client-for-minecraft-bedrock_GM479516143.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-robux-generator-2021_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-get-a-lot-of-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-robux-without-downloading-anything_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/roblox-verification_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-robux-only-username_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-hack-org_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-robux-hacks-no-verification_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/rbx-land-free-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-games-like-roblox_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-hack-mod_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-robux-hacker-us_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-card-hack-app_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-robux-2021-codes_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/hacks-to-get-free-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/robux-free-gift-card_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003002.bin
1759bfea9e840b0ec5f4d4f5c80ef83ddfdf117db784b99c8322a028ece3739d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3002 23012 bytes
font_01_sfnt_off0000639e.bin
b440c48c3f289b909ed34f2eee2f3b6fc5dac76bbfa3721c7bf6b2977e88f8db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639E 18944 bytes

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