Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9e8d895b48e27fa…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 00:06:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 83f99201d8aa44d14daab07fff76b0de SHA-1: c718d9d989fd6db573ee837285913df9c9d415ad SHA-256: f9e8d895b48e27fad24083f42c7d79645487a41bc120556caf100b6019a89b51
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous links to websites offering free spins for Coin Master and hacks for Roblox, indicating a lure for potentially malicious content or scams. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs supports a phishing or social engineering attack pattern. No scripts were extracted, but the overall context suggests a phishing attempt to redirect users to malicious sites.

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/406889139/coin-master-free-spins-link-2021-april-game-hack
    • http://digilib.ulm.ac.id/pusat/repository/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-accounts-with-builders-club_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/roblox-op-free-gui_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/robux-hacks-2021_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hack-bars-2021-pc_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-no-verify_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-aimbot-in-breaking-point-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-hacks-wurst_GM479516143.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-on-roblox-2021-android_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-app_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/hoq-to-buy-anything-from-catalog-for-free-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-swordpack_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-that-works-2021_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-robux_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-pet-food-coin-master_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-card-hack-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_off00002f19.bin
255d301be9c3a4dfef8af52c21ebed343c72a0c9b6a95e556ea5a0d14bf81286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F19 22844 bytes
font_01_sfnt_off00006252.bin
08a26911c431c2c7dfe5adc9e213d8dad12c699763a5d9737028d93893961ff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 18820 bytes

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