Malicious PDF — malware analysis report

Static analysis result for SHA-256 9df1ab4ec0f2dcb1…

MALICIOUS

PDF

42.2 KB Created: 2021-05-13 07:40:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 02cab67b51e8f64a11443822ee020581 SHA-1: a38b4cc9bd870e773a433a32d430846a8a828c95 SHA-256: 9df1ab4ec0f2dcb1a45acf327b1e9a27b81ebcc511b2a704dc0fbff15900cd51
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a fake CAPTCHA lure and embedded URLs, indicating an attempt to trick the user into downloading a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence. The presence of multiple links to 'hack' related content suggests a scam or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/free-spins-and-coins-on-coin-master-game-hack PDF link annotation
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/www-rbx-com_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004af1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF1 25524 bytes
SHA-256: 20693581caafcc5b379bd68c68429fbeb56df65871192b40fffab416547bf918
font_01_sfnt_off0000832c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832C 18060 bytes
SHA-256: 64690fddacb88a1b87eb78a3bf181b542b813998c8d2539429c7660090ba79fa

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