Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba4acd54aeda2cd…

MALICIOUS

PDF

43.1 KB Created: 2021-05-15 14:18:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6e14b1f5007665d3398a263624c5e431 SHA-1: b78f049d17d878467feb02e1f4ddcba3ad5dd6f2 SHA-256: 5ba4acd54aeda2cd0c5ad9028e8023bd8de9c71e984304163d41d6e5f45690ed
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The document contains a lure related to 'Coin Master' game hacks, directing users to a URL that likely hosts a malicious payload. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document attempts to trick users into revealing sensitive information, such as game account credentials or private keys. The presence of embedded URLs and the ML classifier's high confidence score support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/406889139/coin-master-2021-free-spins-link-today-game-hack
    • http://www.occquimica.com.br/images/daily-free-spins_GM406889139.pdf
    • http://www.occquimica.com.br/images/lucky-patcher-coin-master-hack_GM406889139.pdf
    • http://www.occquimica.com.br/images/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://www.occquimica.com.br/images/coin-master-heaven-links_GM406889139.pdf
    • http://www.occquimica.com.br/images/free-spins-coin-master-links-2021_GM406889139.pdf
    • http://www.occquimica.com.br/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdf
    • http://www.occquimica.com.br/images/coin-master-gold-cards-free_GM406889139.pdf
    • http://www.occquimica.com.br/images/coin-master-spin-hack-link_GM406889139.pdf
    • http://www.occquimica.com.br/images/free-spins-coin-master-hack_GM406889139.pdf
    • http://www.occquimica.com.br/images/free-coin-master-spin-generator_GM406889139.pdf
    • http://www.occquimica.com.br/images/free-minecraft-account-list_GM479516143.pdf
    • http://www.occquimica.com.br/images/free-robux-promo-codes-2021_GM431946152.pdf
    • http://www.occquimica.com.br/images/clean-master-hack-coins_GM406889139.pdf
    • http://www.occquimica.com.br/images/master-free-spin-and-coin-links-html-m-1_GM406889139.pdf
    • http://www.occquimica.com.br/images/roblox-catalog-free_GM431946152.pdf
    • http://www.occquimica.com.br/images/free-robux-videos_GM431946152.pdf
    • http://www.occquimica.com.br/images/free-online-games-like-minecraft_GM479516143.pdf
    • http://www.occquimica.com.br/images/free-coin-master-spins-hack_GM406889139.pdf
    • http://www.occquimica.com.br/images/robux-no-verification_GM431946152.pdf
    • http://www.occquimica.com.br/images/roblox-system_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c0.bin
505d6a6b7ef3fbe30dfe77e735825d3e58cc4c814222b21fab4f9bff936e8d30
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C0 25384 bytes
font_01_sfnt_off0000845b.bin
1796d469d6688880968d5d589eff493e0f1aaa6a9dd62a8c2503fd741fb93e80
pdf-font-stream PDF embedded font (sfnt) at offset 0x845B 18812 bytes