Malicious PDF — malware analysis report

Static analysis result for SHA-256 e023d70d0debb196…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 03:32:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b76757d8a2592a67739bff7c80446445 SHA-1: 7dbd39b48ce2d24097fce36d964b9d41a6e8b399 SHA-256: e023d70d0debb196dccb58dcb28fb0b45d641bb02b85fceb766ca47177de51d8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a visual download button lure, suggesting it is designed to trick users into downloading a malicious file. The ML classifier strongly flagged this PDF as malicious. The presence of external URIs and the overall context indicate a phishing or scam attempt, likely using a social engineering pretext related to popular games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-roblox-acc-game-hack
    • http://www.exikom.com.ua/images/roblox-comcom_GM431946152.pdf
    • http://www.exikom.com.ua/images/links-to-free-spins-on-coin-master_GM406889139.pdf
    • http://www.exikom.com.ua/images/coinmaster-links_GM406889139.pdf
    • http://www.exikom.com.ua/images/hacks-to-get-free-robux_GM431946152.pdf
    • http://www.exikom.com.ua/images/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://www.exikom.com.ua/images/hack-coin-master-no-human-verification_GM406889139.pdf
    • http://www.exikom.com.ua/images/roblox-exploit-scripts_GM431946152.pdf
    • http://www.exikom.com.ua/images/minecraft-multiplayer-free_GM479516143.pdf
    • http://www.exikom.com.ua/images/roblox-hacks-com_GM431946152.pdf
    • http://www.exikom.com.ua/images/mcpe-master-hack-unlimited-coins-download_GM406889139.pdf
    • http://www.exikom.com.ua/images/coin-master-free-spin-group_GM406889139.pdf
    • http://www.exikom.com.ua/images/minecraft-logo-maker-free_GM479516143.pdf
    • http://www.exikom.com.ua/images/cheating-hacks-for-coin-master_GM406889139.pdf
    • http://www.exikom.com.ua/images/hacks-for-roblox-jailbreak_GM431946152.pdf
    • http://www.exikom.com.ua/images/coin-master-hack-pc-2021_GM406889139.pdf
    • http://www.exikom.com.ua/images/give-me-robux-now_GM431946152.pdf
    • http://www.exikom.com.ua/images/get-free-spins-in-coin-master_GM406889139.pdf
    • http://www.exikom.com.ua/images/coin-master-free-spins-no-human-verification_GM406889139.pdf
    • http://www.exikom.com.ua/images/robux-place-rewards_GM431946152.pdf
    • http://www.exikom.com.ua/images/master-coin-free-spin_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048f9.bin
a92c248d68f149d01a6e788e972fb57d3caaac5010bb0f587e22c6742a589460		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F9 25224 bytes
font_01_sfnt_off000083ae.bin
74db3e5e7aeb6f0756448051187db7defe34e7c9b7f0bab0dc8e4ffe2ac72fee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AE 17948 bytes

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