Malicious PDF — malware analysis report

Static analysis result for SHA-256 00cf27fa65c25bc8…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 15:32:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a7798699eaac2191e81a92f8ee2e511e SHA-1: 2609b1eab952f5086d22f8a34b4fdb4212a787fd SHA-256: 00cf27fa65c25bc8c2a83c07e31ab3a30990ab621db35e3de83109b98c25367c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free in-game currency for popular games like Coin Master and Roblox, directing users to external URLs. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a 'password-protected archive' lure suggests it's designed to trick users into downloading a second-stage payload. No scripts were extracted, but the overall pattern indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.tw/app/406889139/how-to-get-free-spins-on-coin-master-2021-ios-game-hack
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-admin-on-roblox-2021_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/como-tener-robux-hack-2021-funcionando_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-rbx-june2021_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/100-robux_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-roblox-money_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/get-free-spins-from-coin-master_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/earn-robux_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-password-hacker-generator_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-medieval-warfare-reforged-hack_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-spins-and-coins-coin-master_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-accounts-with-cookies_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/bux-free-robux_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-mod_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/cheat-roblox-lumber-tycoon-2-jump_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/undetected-cheat-engine-roblox_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/at-which-game-have-free-robux-at-roblox_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-spin-and-coin-blogspot_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-by-using-inspect_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033ab.bin
69d7eeb2a102201fb60dbf783ddcf8a1649d4f79b050a60f3525ac4a7f523e83		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33AB 23060 bytes
font_01_sfnt_off00006798.bin
db9331b378d6387681cc95ee7fe86859b0658abe79ad3f4e845055ed0553f67a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6798 18740 bytes

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