Malicious PDF — malware analysis report

Static analysis result for SHA-256 80eac67567c6e56b…

MALICIOUS

PDF

38.3 KB Created: 2021-05-21 22:20:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 42029050c2462dcfd672d61e7643dd4f SHA-1: e29d84ee6ea5a8062882692cad9c8ce198bf1b8a SHA-256: 80eac67567c6e56b39bd17eb3e625739e72aeeb3efe16a87634a9ec6111b17a1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free virtual items and game currency, such as 'Free Roblox Gift Cards' and 'Coin Master Free Spins'. It embeds multiple URLs pointing to potentially malicious domains, including one that appears to be a direct download link. The presence of a 'Password-protected archive handoff' heuristic suggests the document may be designed to trick users into downloading an encrypted payload, which is then accompanied by password instructions to bypass security measures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

Heuristics 4

  • 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
  • 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/how-to-get-free-roblox-gift-cards-game-hack
    • http://www.herricht.at/images/coin-master-free-spins-link-ios_GM406889139.pdf
    • http://www.herricht.at/images/free-spins-on-coin-master_GM406889139.pdf
    • http://www.herricht.at/images/free-roblox-accounts-with-robux-2021_GM431946152.pdf
    • http://www.herricht.at/images/free-mojang-account-with-minecraft_GM479516143.pdf
    • http://www.herricht.at/images/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003367.bin
27d7c0bb013efc090b87206a4e531fb1b3f1090d4b0005d8d45f1ae9769a8d31		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3367 27768 bytes
font_01_sfnt_off00007325.bin
4ca4edcee29dbb5ec5fd43b786ee3a040f637d4fa80ece8255e459f77acc63d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7325 18740 bytes

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