Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1e5f1e7eebd9e00…

MALICIOUS

PDF

45.1 KB Created: 2021-05-16 02:30:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b45e36a84fe5b88f842bfb20e0ac3fa7 SHA-1: 78256d99329ac6c4ac6502f6350df5032e1813b9 SHA-256: a1e5f1e7eebd9e000cf83eff830670896e3aa1a140572f271007c167b8d61a13
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document body and extracted URLs indicate a lure for free in-game currency or hacks for popular games like Coin Master and Roblox. The heuristic 'SE_SECRET_RECOVERY_LURE' suggests the document may attempt to trick users into revealing sensitive information. The presence of embedded URLs and the ML classifier's high confidence score point towards a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-free-spins-game-hack
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-robux-generator-without-human-verification_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free_GM479516143.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/freerobuxhack-us-2021_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/roblox-hack-me-robux_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-minecraft-com_GM479516143.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-apk-hack-35-8_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/roblox-avatar-girl_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-roblox_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-100-robux_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-100-spin-hack_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-free-spins-link-today-new_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-minecraft-printables_GM479516143.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/how-to-get-free-robux-on-iphone_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/how-to-earn-robux-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e20.bin
80adce049e96c880b29298a0ecbace6c3d324a0dd1fdb22fc48f71df2c70438c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E20 29108 bytes
font_01_sfnt_off00008f71.bin
7b855ef2bb944b5b370c61480927ccad63ff31bdbf820bc1f0da9d35a10f5fb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F71 17884 bytes

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