Malicious PDF — malware analysis report

Static analysis result for SHA-256 1249fb479f3e4a66…

MALICIOUS

PDF

41.9 KB Created: 2021-05-18 02:24:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 747686c85651e7a164b9e6431870d9c5 SHA-1: b83586052378ee44cbec25b65cc9e6f660838dd1 SHA-256: 1249fb479f3e4a6636d3a0bde0a4a6af682655ece88e480a4b8626cfa5d53ffb
82 Risk Score

Malware Insights

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

The document presents itself as a free game hack, likely to trick users into downloading a malicious payload from the embedded URL. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may contain instructions to execute commands, potentially leading to further compromise. The ML classifier also strongly flagged this PDF as malicious.

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/479516143/minecraft-java-for-free-game-hack PDF link annotation
    • http://dieter-sauter.com/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-spin_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/hacks-minecraft_GM479516143.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_off0000491f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x491F 26232 bytes
SHA-256: 39b326e60a2b9ffda2547b20cfb3c7c9a3136169a4b16dbf0ab68a0df1859573
font_01_sfnt_off00008263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8263 17992 bytes
SHA-256: 877a408be013f078917fd76a4bbe40e25113e750108d1b6ebc83b07ab96d646a

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