Malicious PDF — malware analysis report

Static analysis result for SHA-256 9289966ef23d0378…

MALICIOUS

PDF

41.6 KB Created: 2021-05-19 01:07:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 12d4b2d27c1d7276438bae9f40bc11cb SHA-1: 5e4077fadce72a01ea9fdd4e838d48ce7b090d08 SHA-256: 9289966ef23d037859e2a915bbc43087356274bd2f1dc42352e99a7f8b0ed090
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document employs social engineering tactics, specifically a 'ClickFix' lure, to trick users into executing commands or downloading files. The document body and embedded URLs suggest a lure related to free games or in-game currency, aiming to exploit user interest. The presence of external URIs and the ML classifier's high confidence score indicate a malicious intent to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/479516143/minecraft-win-10-free-game-hack
    • http://perpus.unik-kediri.ac.id/repository/robux-com-free_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/how-to-exploit-roblox_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/get-free-robux-now_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/roblox-www-com_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/minecraft-for-chromebook-free_GM479516143.pdf
    • http://perpus.unik-kediri.ac.id/repository/free-robux-co_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/free-robux-real-working_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://perpus.unik-kediri.ac.id/repository/coin-master-firebird-card-free_GM406889139.pdf
    • http://perpus.unik-kediri.ac.id/repository/free-robux-com-roblox_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/minecraft-free-download-unblocked_GM479516143.pdf
    • http://perpus.unik-kediri.ac.id/repository/free-spin-coin-master-new-link_GM406889139.pdf
    • http://perpus.unik-kediri.ac.id/repository/free-robux-2021_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/free-coin-master-cards_GM406889139.pdf
    • http://perpus.unik-kediri.ac.id/repository/free-robux-gen_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/earn-free-spins-for-coin-master_GM406889139.pdf
    • http://perpus.unik-kediri.ac.id/repository/free-robux-for-free_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdf
    • http://perpus.unik-kediri.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004883.bin
ee3ad345346013242f3c30559e43a019671cad7f7a35d1610a2ee64c22b7e9fe		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4883 25020 bytes
font_01_sfnt_off000080f5.bin
8c18055e18e603d9435ca6119687fbcabefed8c156a2aaa85b6717beca9cc20e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80F5 18044 bytes

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