Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ce3d1c4c5b046f…

MALICIOUS

PDF

43.8 KB Created: 2021-05-15 03:43:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: acacad4baae5f5c58925a97cd7f683cf SHA-1: 5720bb95d37a3c4607bf2672d328407c9c5f3363 SHA-256: 09ce3d1c4c5b046f909ec83db417994c3702b5788be4bef41abc3f5cd1cb048d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free Robux, directing users to a suspicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent. The document body, though heavily obfuscated, contains references to the primary malicious URL and other potentially malicious PDF files, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/give-free-robux-game-hack
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/hack-version-coin-master-apk_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-free-gifts_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/how-to-get-free-robux-no-verification_GM431946152.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/roblox-but_GM431946152.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-game-2021-free-spin-link_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/collect-free-spins-coin-master_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/robux-miner_GM431946152.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/spin-free-coin-master_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/how-to-block-someone-on-coin-master_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/free-coin-master-cards-link_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/hack-coin-pro-coin-master_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-hack-account_GM406889139.pdf
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/easy-ways-to-get-free-robux_GM431946152.pdf
    • https://robuxhaxs.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d1e.bin
92190a493961d4c4f2387f51941d246e91ba2637d8e2ba6bf19605a2025db78d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D1E 26648 bytes
font_01_sfnt_off00008934.bin
ea59f1cb8b041c2b832a039673c57edae81c360e33a5bea04888abdf43ec1c43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8934 18248 bytes

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