Malicious PDF — malware analysis report

Static analysis result for SHA-256 22a1a1e0f6e97dda…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 13:39:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2be5ebb92a1d3254094e4fe1217f9093 SHA-1: adae305afc04d3fc228491292862be4971ab1106 SHA-256: 22a1a1e0f6e97ddaa5bd55972f49979fca6dd851c177c99d39c01964e0f1ac39
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a prominent lure for a "Coin Master Game Hack App". The presence of a "password-protected archive lure" heuristic suggests that the document may be intended to trick users into downloading an archive that requires a password, likely to bypass security scanning. The ML classifier also strongly flagged this PDF as malicious.

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/coin-master-game-hack-app-game-hack
    • http://library.unissula.ac.id/fk/repository/claim-free-robux-button_GM431946152.pdf
    • http://library.unissula.ac.id/fe/repository/tiktok-free-verified_GM835599320.pdf
    • http://library.unissula.ac.id/fk/repository/coin-master-links-to-get-free-spins_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/how-to-get-roblox-on-pc-for-free_GM431946152.pdf
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-premium-roblox_GM431946152.pdf
    • http://library.unissula.ac.id/fe/repository/epic-mining-hack-roblox_GM431946152.pdf
    • http://library.unissula.ac.id/fk//repository/coin-master-website_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/get-free-25-robux_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/is-roblox-on-switch-free_GM431946152.pdf
    • http://library.unissula.ac.id/fe/repository/daily-free-spin-link-for-coin-master_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/hack-roblox-rocitizens_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/sparereborn-roblox-hacks_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/free-roblox-catalog-items-2021_GM431946152.pdf
    • http://library.unissula.ac.id/fe/repository/no-human-verification-coin-master-hack_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/coin-master-hack-apk-link_GM406889139.pdf
    • http://library.unissula.ac.id/fe/repository/how-to-hack-roblox-tycoons_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/hack-para-phantom-forces-roblox_GM431946152.pdf
    • http://library.unissula.ac.id/fk//repository/microsoft-rewards-robux_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/free-coins-and-spins-coin-master_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/roblox-com-hack-password_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034b6.bin
d09fd17f37b0913563051b5e5944ff5a8afb72a4680d89dc74d5153d0f77498e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34B6 22896 bytes
font_01_sfnt_off000067dd.bin
571ab4b458d0dac508f9535f575fba5b7e94d60ff2bdf8022b00b4ca59ab09de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67DD 18440 bytes

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