Malicious PDF — malware analysis report

Static analysis result for SHA-256 74dcf0f55bc1bcb3…

MALICIOUS

PDF

44.7 KB Created: 2021-06-07 15:00:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 85479073a56c1851b74ee2da92109077 SHA-1: dff774921719ca205e9f7e0ea2c0e76f89d50da1 SHA-256: 74dcf0f55bc1bcb3c4b5f8eda9743258f3e95e64a0e9533032c01b5cec67a97f
82 Risk Score

Malware Insights

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

The PDF document contains a lure for downloading a game hack, indicated by the embedded URL and the presence of a call-to-action button. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the URL leading to the purported hack download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/dungeon-quest-roblox-hack-download-game-hack
    • https://www.tsdb.com.au/images/minecraft-windows-10-edition-hacks_GM479516143.pdf
    • https://www.tsdb.com.au/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdf
    • https://www.tsdb.com.au/images/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdf
    • https://www.tsdb.com.au/images/roblox-hack-codes_GM431946152.pdf
    • https://www.tsdb.com.au/images/minecraft-account-hacked_GM479516143.pdf
    • https://www.tsdb.com.au/images/how-to-hack-coin-master-spin-ios_GM406889139.pdf
    • https://www.tsdb.com.au/images/google-how-do-you-get-free-robux_GM431946152.pdf
    • https://www.tsdb.com.au/images/roblox-money-hack_GM431946152.pdf
    • https://www.tsdb.com.au/images/free-expire-items-on-roblox_GM431946152.pdf
    • https://www.tsdb.com.au/images/minecraft-java-edition-free-download-for-android_GM479516143.pdf
    • https://www.tsdb.com.au/images/free-robux-without-human-verification-2021_GM431946152.pdf
    • https://www.tsdb.com.au/images/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • https://www.tsdb.com.au/images/coin-master-hack-programers_GM406889139.pdf
    • https://www.tsdb.com.au/images/free-minecraft-for-kids_GM479516143.pdf
    • https://www.tsdb.com.au/images/minecraft-client-download_GM479516143.pdf
    • https://www.tsdb.com.au/images/cm-spins_GM406889139.pdf
    • https://www.tsdb.com.au/images/minecraft-bedrock-hacks_GM479516143.pdf
    • https://www.tsdb.com.au/images/free-minecraft-accounts-reddit_GM479516143.pdf
    • https://www.tsdb.com.au/images/coin-master-hacks-for-free-spins_GM406889139.pdf
    • https://www.tsdb.com.au/images/free-links-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e3a.bin
b203b1c89691eef0940f69da415965c883ea07376ba976baebfdf4f93876445e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E3A 25776 bytes
font_01_sfnt_off00008865.bin
20063313a30492010053bf5f74b8074c6cfc415e23c7c76f0adbc273aeec269f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8865 19376 bytes

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