Malicious PDF — malware analysis report

Static analysis result for SHA-256 6daf042b341a0b2b…

MALICIOUS

PDF

42.1 KB Created: 2021-05-16 00:34:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0aaeeac7f86a9ddae57b9624c7b26bab SHA-1: 16b0c3170b5aa0afd3a502099465ea872f6ef828 SHA-256: 6daf042b341a0b2bf1abe73a30265e8764b3d406991999e5527369382d1410a4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for downloading a file, indicated by a visual download button and a heuristic firing for clipboard command execution. The embedded URL and document body suggest a scam related to game currency. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs points to a potential download or redirection to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/431946152/hack-robux-game-hack PDF link annotation
    • http://dejipkesbelt.nl/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://dejipkesbelt.nl/images/free-spins-and-coins-for-coin-master_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_off000046a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46A6 27176 bytes
SHA-256: 11996af747ae95e09d19a13c66aab4d53b1fd78092ed81eceb6b4d9c86bee3c7
font_01_sfnt_off0000821e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821E 18248 bytes
SHA-256: 9805bb7d0eadd4beaac6fd3b5d5d8b6e8e5d33c97ce909732e364f826719e5d2

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