Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd7cfd5e1e6f4c7…

MALICIOUS

PDF

33.4 KB Created: 2021-07-03 11:56:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 92afe3b64dd6bcccefeda67417199453 SHA-1: e89798a8a0a4c0d581d42b79658f567061fe9002 SHA-256: bcd7cfd5e1e6f4c785470a1b20162bf08a3aaa6683e53a3082e435f8f958ff50
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains numerous embedded URLs and text referencing 'free Robux' and 'Coin Master spins', indicating a lure for users to download potentially malicious files. The ML classifier strongly flagged this PDF as malicious, and the presence of download-related lures reinforces this assessment. The primary attack pattern involves tricking users into executing a downloaded payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-bux-free-game-hack
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master-2021_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/code-for-roblox-hack-generator_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/how-did-roblox-get-hacked_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/yt-roblox-free-robux_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/how-to-give-yourself-free-robux_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/microsoft-bing-free-robux_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/www-coin-master-hack-tk_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/roblox-help-free-robux_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/hack-game-plus-com-coin-master_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/how-to-you-hack-on-roblox-assassin-2021_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/island-royale-roblox-hack-esp-script_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c15.bin
bfd5473891f27200e1f22391c8655efb75a1efad0b199a4f7a158fd39eb594fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C15 22600 bytes
font_01_sfnt_off00005e95.bin
fbab28d7f6e5a424fa162c67bd0527d854af59c09f66b1d36dcf755703a8e09e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E95 18788 bytes

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