Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c7a43a6b39893d7…

MALICIOUS

PDF

42.9 KB Created: 2021-05-19 16:09:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c4bc2f80c07c34af9b9cfaeab1c4525a SHA-1: 81e1d9b77f34f3755ab5334a0d37fc0e8bae7eb1 SHA-256: 9c7a43a6b39893d7af76411bfc9dac1ff72506cecbd51d864dbb9f9a3a429c27
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a lure related to free Minecraft server hosting and contains multiple embedded URLs pointing to potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and heuristic rules indicate it uses invoice or download button lures, often combined with password protection instructions to obscure payloads. The presence of embedded URLs suggests an attempt to redirect the user to a site that will likely host a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/free-minecraft-server-hosting-24-7-game-hack PDF link annotation
    • http://jackson-pr.com/images/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/pokemon-go-free-promo-code-2021_GM1094591345.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/tik-tok-free-fire-30-detik_GM835599320.pdfIn PDF document text
    • http://jackson-pr.com/images/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://jackson-pr.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://education.minecraftIn 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_off00004c08.bin
5a98dc343e8b165db377836bcf169046c920f430e7107df6c01359cc55fee6ec		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C08 25152 bytes
font_01_sfnt_off000084f2.bin
91a7490c887560cf1db9cb18ebb1e2a98db2d1ca6a1740dfb9f9cb38742cb9c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84F2 18352 bytes

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