Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8c4bd7e061176b2…

MALICIOUS

PDF

35.5 KB Created: 2021-05-22 09:14:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ea99de06b2161f440b6a12ef137599bf SHA-1: 5a920d0efcf4212652b786c5fce9d6c0e5de4090 SHA-256: d8c4bd7e061176b2966146806075021488050fe9a5e224bfbf5c39c9b83ce112
90 Risk Score

Malware Insights

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

The PDF document employs social engineering by promising free TikTok accounts and passwords, coupled with a lure to install a browser extension or viewer. This is a common tactic to trick users into downloading and executing malicious content. The presence of an external URI pointing to a suspicious domain further supports the malicious intent, likely leading to a second-stage download or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

Heuristics 5

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/835599320/free-tiktok-accounts-and-passwords-game-hack
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-ios_GM479516143.pdf
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/minecraft-free-download_GM479516143.pdf
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/hacker-minecraft-song_GM479516143.pdf
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdf
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003128.bin
d8d1e53490a089cbb04354e2eb42ba3c840259dcda1a174af3e89d2c00ce125b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3128 24392 bytes
font_01_sfnt_off00006916.bin
bbd6b533d869a7a089323291600526adae2a42e90d5e0cf5c01053f7505e7d8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6916 18316 bytes

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