Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d5093b6077764cc…

MALICIOUS

PDF

35.2 KB Created: 2021-06-18 09:44:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 14acf29fe277bfb49a9a8b75be02ae76 SHA-1: 0f481fb79ea423fa714df9f741ebc9d75bb6ccac SHA-256: 8d5093b6077764cc04214cef7aec94a810249bdd4d2f1f44ff7e36b14f0d63fa
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.003 Windows Command Shell

The PDF document contains heuristics indicating it's designed as a social engineering lure, specifically a 'ClickFix' attack. It instructs the user to copy and paste content into a terminal, which is a common method to bypass macro restrictions and execute malicious commands. The embedded URL, http://netcdn.co/app/431946152/vehicle-simulator-roblox-speed-hack-game-hack, likely serves as a download source for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 http://netcdn.co/app/431946152/vehicle-simulator-roblox-speed-hack-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/wizard-hacks_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000313a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313A 22012 bytes
SHA-256: ead78fe7303d33e0eec6c22ed84659a8ee057ec4e8abb016ceea23b4db585dfa
font_01_sfnt_off00006225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6225 19932 bytes
SHA-256: 1c462f98e683afb7eb4078938415075a61a4114dd40db9fad8ab7f4180b6d413

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