Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d78d7e15c899fd4…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 10:22:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ef483cabfdb5c500b3909046d3b49a6f SHA-1: bdc8e64f72db286d3cc02a8166a61a40be2dfa4c SHA-256: 6d78d7e15c899fd4171200033d65b8f45a1c3f6e1fee474cb4da14d9ad1d1f1b
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a download button, aiming to trick users into downloading a payload. The embedded URL and numerous other URLs point to sites offering game hacks and cheats, suggesting a social engineering lure. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • 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
  • 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.online/app/406889139/coin-master-daily-free-spins-2021-game-hack
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/classic-minecraft-net-hacks_GM479516143.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/100-hack-coin-master_GM406889139.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-spins-coin-master-2021_GM406889139.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-tips_GM406889139.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/get-free-robux-without-human-verification_GM431946152.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-attack-block-hack_GM406889139.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-spin-free_GM406889139.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/why-tiktok-free-download_GM835599320.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/easy-robux-hack_GM431946152.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/60-free-spins-coin-master_GM406889139.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/where-to-buy-pubg-uc-cheap_GM1330123889.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/free-robux-ad_GM431946152.pdf
    • http://pustaka.kebudayaan.kemdikbud.go.id/repository/claim-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005411.bin
5399e9a178d7e3a3b862358ad2e957786bdf4095ba439ea65b659639fee92475		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5411 25260 bytes
font_01_sfnt_off00008de1.bin
0e09573a858265cfc65c534eb28458a66078312e2bd7bae94317e03ea41fcd19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE1 18708 bytes

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