Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a21206aebee5cdf…

MALICIOUS

PDF

35.8 KB Created: 2021-06-26 15:51:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 989792595400f431e00c0de9c96c40c3 SHA-1: 7bd234cb9a0e99d8242e3c55a1937cb3751c154f SHA-256: 5a21206aebee5cdf53ac6e5854c7407ed7f605c47f1cabfc96e63a009b32be20
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and text referencing 'free Robux' and game hacks, indicating a phishing or scam lure. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to redirect the user to a malicious site. While no scripts were explicitly extracted, the document's structure and content point towards a social engineering attack designed to trick users into downloading further malware or divulging information.

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-hack-code-2021-game-hack
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-roblox-jailbreak-hacks_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/what-is-robux_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/roblox-robux-generator-tool_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/get-more-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-coins-for-flip-master-online_GM406889139.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-do-you-hack-roblox-to-have-sex_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/roblox-avatar-maker-free_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-2021-free-spins-link_GM406889139.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-link_GM406889139.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-survey_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-minecraft-accounts-2021_GM479516143.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/tiktok-free-view-iphone-theme_GM835599320.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-robux-come_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/hack-money-roblox-jailbreak_GM431946152.pdf
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-spin-link-of-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003224.bin
0251b855069476ac2277af935e6fadde83c099036f8c89085ea4a5a7712dbb63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3224 22960 bytes
font_01_sfnt_off0000657b.bin
3199a1ccc2125efccbb74d69f9e7117b275f13189ed240b0462a4b6150a82f31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657B 19460 bytes

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