Malicious PDF — malware analysis report

Static analysis result for SHA-256 447aba50b34c2c25…

MALICIOUS

PDF

45.5 KB Created: 2021-05-11 06:36:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: be53c3ceb12b378a5350301859756bc8 SHA-1: 3dad1c55f7e175f154035a40b32d2bb22e24a45f SHA-256: 447aba50b34c2c25d52624cf930a1bd08891da05d8281e3e2257ff3cd09dde35
122 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a download button, aiming to trick the user into downloading a malicious file, likely related to game hacks. The presence of multiple URLs pointing to similar content reinforces this malicious intent. No scripts were extracted, but the document's structure and heuristics strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 5

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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 https://netcdn.xyz/app/479516143/minecraft-reach-hack-game-hack
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-hack-to-get-free-spins_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-generate-free-coin-master-spin_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-offers_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-35-16-hack-apk_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/roblox-hacks-2021_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-robux-now_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-free-100-spin_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-no-fb-login_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/hack-coin-master-android-2021_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/minecraft-auto-miner-hack_GM479516143.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/minecraft-pe-apk-free-download_GM479516143.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/twitter-coin-master-free-spins-link_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master-link_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-today-daily-links_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-hack-account_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e3a.bin
f98326e5323e8223b52ae6ad764bdcead2dc28888dd636433b544a2987bb0f69		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E3A 24996 bytes
font_01_sfnt_off000086d9.bin
c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86D9 2892 bytes
font_02_sfnt_off000090c3.bin
338e778c1ae38c15f57d68695408d0432531e6a93a33e2a2d7ec381387a6f025		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90C3 17904 bytes

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