Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc1f82224ac1c79…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 17:01:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3c2bce02c19dac62ff06075f188b1e59 SHA-1: 77a03de123c4f70784a4ff249cbcda6107928684 SHA-256: 3bc1f82224ac1c79cf4dd114f4148e13c4b2f2328316bf3e03c6525cef56c6b9
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game-related cheats and hacks, directing users to external URLs for downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a download button lure reinforces this assessment. Although no scripts were explicitly extracted, the document's structure and content suggest it's designed to trick users into downloading malware.

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/406889139/coin-master-free-spin-and-coin-game-hack
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-on-a-phone_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/hack-noclimb-roblox-2021-marzo_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/free-robux-hack-no-survey-2021_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/rbxoffer-com-free-robux_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/fd-hacks-roblox_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/coin-master-free-spins-without-human-verification_GM406889139.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/roblox-premium-free_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/how-can-i-get-free-robux_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/coin-master-online-hack-no-human-verification_GM406889139.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-no-inspect_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/free-roblox_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/free-robux-2021-april-wow_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/roblox-piano-hack-mobile_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/minecraft-launcher-download-free_GM479516143.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/m-roblox-hack_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • https://elearning.alhurriyah1.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-phone_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000326e.bin
eb62a399a9d6f397d5b2309c9921da030de4937a470b800b25a53f8f4886b93f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x326E 22940 bytes
font_01_sfnt_off000065e8.bin
3aa320ccb9cb7c087074e4ef079b33192d8e05703f275142029ef104db56ac85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E8 18348 bytes

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