Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bcb3b172b8dc6b6…

MALICIOUS

PDF

41.9 KB Created: 2021-05-15 11:58:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7b41e77f437df67979c3c0340f209d08 SHA-1: da3b394e1ce9d2db2e32afcf2df3981ac1b4c765 SHA-256: 0bcb3b172b8dc6b6af8ef535134a65a0e7b0779b3d912900d478a655c2adbdc1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.001 Command and Scripting Interpreter: PowerShell

The document contains a lure instructing the user to copy and paste content into a command-line interface, which is a common technique for executing malicious commands or downloading further payloads. The presence of multiple URLs suggests a downloader or redirector pattern. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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
  • 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-hosting-game-hack PDF link annotation
    • http://eurosystemssrl.it/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/abd-roblox_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/freecoins_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000493d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x493D 25164 bytes
SHA-256: 3e7eca4c75b58842b3aa60eea31e0f0147baa8ae38e979390cf56853c6bbb099
font_01_sfnt_off0000824c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824C 17996 bytes
SHA-256: bf6ae4c6721fa3eadf2b386a9cfec38fcd2e671f0767c49619a657aa344fd652

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