Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e1194fe9d07531…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 09:29:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bd78dac4706aa32ff158b7bc2d7879db SHA-1: 6a5d7bf90beba269de9bb6625f4eaa3907837421 SHA-256: b9e1194fe9d075313494640f5f193e2bf786dc5b15f3c1a2546fe9eca2b0ce47
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs pointing to external resources, some of which are hosted on an IP address. The document body, though heavily obfuscated, contains references to popular games and services, suggesting a lure to trick users into downloading further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.online/app/835599320/tiktok-free-website-game-hack
    • http://110.164.163.187/ckfinder/userfiles/files/my-roblox-avatar_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-minecraft-client_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/is-minecraft-free-on-switch_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-avatar-maker-free_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-cards_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/minecraft-hacker-skin_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-download_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/best-free-robux-sites_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-hack-2021_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-get-free-pet-food-on-coin-master_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-adopt-me-hack_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/robux-matchcomfree-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f69.bin
390f6eec86423511aed3f8518422e87527463ec6838113cba1717f6392f7e214
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F69 24864 bytes
font_01_sfnt_off00008937.bin
5ff8c618f38ac341f9cce8ee536e18ea9ffd26b9ba97f685e73b0d5242db8cec
pdf-font-stream PDF embedded font (sfnt) at offset 0x8937 17812 bytes