Malicious PDF — malware analysis report

Static analysis result for SHA-256 23205ec705d8c902…

MALICIOUS

PDF

45.5 KB Created: 2021-05-19 01:14:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: da708674d189ae0d0128e13ebb4c10c7 SHA-1: 2f2f73267237595c8fb3b625abf6a4fa0f199857 SHA-256: 23205ec705d8c902074e9faea0d929351aad80894f50d86c7bcf9e3562568706
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristics indicate a social engineering attack (ClickFix). The document body, though partially garbled, suggests a lure related to 'free Minecraft server maker' and includes a URL pointing to a potential download. The SE_CLICKFIX heuristic specifically notes instructions to press Win+R or paste a command, indicating an attempt to bypass standard security measures and execute arbitrary commands.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/free-minecraft-server-maker-game-hack
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-bit-ly_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/claim-coin-master-free-spins_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/coin-master-attack-madness-hack_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/free-robux-app_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/roblox-free-clothes-codes_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-on-roblox_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/roblox-free-printables_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/freerobux-co_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-in-2021_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-easy_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/roblox-hack-download_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/hack-coin-master-no-human-verification_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/robux-hack-tools_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/moonactive-coin-master-free-spins_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/free-robux-without-verification_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/codes-how-to-get-free-robux_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/free-coin-master-credit_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d36.bin
433ce5f2741cacfbbc0934c9a45a61f3664d71de4d5d99c726768fa82efbaaa3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D36 26148 bytes
font_01_sfnt_off000086ee.bin
c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86EE 2892 bytes
font_02_sfnt_off000090d8.bin
a2113846211f941d41962086a33418b46c13efddcea93467eebdb757cad7d920		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90D8 17852 bytes

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