Malicious PDF — malware analysis report

Static analysis result for SHA-256 5270d95dc0c6e0e3…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 03:00:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 05db5d319e790ec2ab551133d7784448 SHA-1: a7f7f03b284fd39b5073bb393f08ee50a0acf9cb SHA-256: 5270d95dc0c6e0e3e942b8944d08221483f07db9b87acf80ca6925052ccae07a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains lures for game cheats and exploits a PDF vulnerability, indicated by the ML classifier and PDF-specific heuristics. It embeds multiple URLs pointing to potential malware download sites, suggesting a downloader or exploit delivery mechanism. The presence of a 'secret recovery' lure further increases the maliciousness, aiming to trick users into revealing sensitive information.

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/safe-hack-for-coin-master-android-game-hack
    • http://keepcasscountybeautiful.com/images/free-robux-that-actually-works_GM431946152.pdf
    • http://keepcasscountybeautiful.com/images/hacks-for-minecraft-bedrock_GM479516143.pdf
    • http://keepcasscountybeautiful.com/images/rbxfree-com-free-robux_GM431946152.pdf
    • http://keepcasscountybeautiful.com/images/minecraft-free-apk-download-016-0_GM479516143.pdf
    • http://keepcasscountybeautiful.com/images/coin-master-free-spins_GM406889139.pdf
    • http://keepcasscountybeautiful.com/images/coin-master-spin-and-coins-free_GM406889139.pdf
    • http://keepcasscountybeautiful.com/images/get-free-food-in-coin-master_GM406889139.pdf
    • http://keepcasscountybeautiful.com/images/can-i-get-free-robux_GM431946152.pdf
    • http://keepcasscountybeautiful.com/images/2021-roblox_GM431946152.pdf
    • http://keepcasscountybeautiful.com/images/free-robux-glitch_GM431946152.pdf
    • http://keepcasscountybeautiful.com/images/freerobux-hack-us_GM431946152.pdf
    • http://keepcasscountybeautiful.com/images/how-to-get-free-robux-easy_GM431946152.pdf
    • http://keepcasscountybeautiful.com/images/coin-master-daily-free-spins-2021_GM406889139.pdf
    • http://keepcasscountybeautiful.com/images/coin-master-card-collection-hack-apk_GM406889139.pdf
    • http://keepcasscountybeautiful.com/images/coin-master-free-spin-trick_GM406889139.pdf
    • http://keepcasscountybeautiful.com/images/coin-master-online-hack-generator_GM406889139.pdf
    • http://keepcasscountybeautiful.com/images/free-robux-generator-no-verification-2021_GM431946152.pdf
    • http://keepcasscountybeautiful.com/images/earn-free-robux-on-roblox_GM431946152.pdf
    • http://keepcasscountybeautiful.com/images/coin-master-hack-apk_GM406889139.pdf
    • http://keepcasscountybeautiful.com/images/free-roblox-toy-codes-not-used_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049ed.bin
d0d2041cbfa5969743f19952a818b141642d1e7dc84799c749e1c9ddb6d8d39e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49ED 25380 bytes
font_01_sfnt_off00008358.bin
bd908f19796ba70790696a44cc442d1e4905b0dc020f0f88dcb028517c2e99ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8358 18056 bytes

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