Malicious PDF — malware analysis report

Static analysis result for SHA-256 723476bb56519f22…

MALICIOUS

PDF

45.5 KB Created: 2021-05-11 15:30:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: df1bc1307ea153b19354b8b8d674a557 SHA-1: ace3db53a422ec746bfb2a813c11c42ce3395515 SHA-256: 723476bb56519f227d2611fc55edb27d5d0a5f800235f735ae6e327f45291e47
122 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and heuristics indicate it is designed to trick the user into executing a command. Specifically, the 'SE_CLIPBOARD_COMMAND_LURE' and 'SE_CLICKFIX' heuristics suggest the document instructs the user to copy and paste a command into a shell, likely to download and execute a second-stage payload from one of the provided URLs. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/431946152/robux-match.com-free-robux-game-hack
    • http://acp-institut.fr/images/best-hacked-client_GM479516143.pdf
    • http://acp-institut.fr/images/rbxoffers-com-free-robux_GM431946152.pdf
    • http://acp-institut.fr/images/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdf
    • http://acp-institut.fr/images/free-coin-spin-daily-link-coin-master_GM406889139.pdf
    • http://acp-institut.fr/images/free-minecraft-thumbnails_GM479516143.pdf
    • http://acp-institut.fr/images/free-robux-without-verification-2021_GM431946152.pdf
    • http://acp-institut.fr/images/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdf
    • http://acp-institut.fr/images/free-robux-with-no-verification-2021_GM431946152.pdf
    • http://acp-institut.fr/images/legit-free-spins-coin-master_GM406889139.pdf
    • http://acp-institut.fr/images/free-minecraft-videos_GM479516143.pdf
    • http://acp-institut.fr/images/how-to-get-free-hats-on-roblox_GM431946152.pdf
    • http://acp-institut.fr/images/coin-master-hack-ios-without-verification_GM406889139.pdf
    • http://acp-institut.fr/images/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://acp-institut.fr/images/roblox-free-robux-codes_GM431946152.pdf
    • http://acp-institut.fr/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
    • http://acp-institut.fr/images/free-robux-videos_GM431946152.pdf
    • http://acp-institut.fr/images/robux-free-co_GM431946152.pdf
    • http://acp-institut.fr/images/roblox-hack-download-pc_GM431946152.pdf
    • http://acp-institut.fr/images/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://acp-institut.fr/images/minecraft-complete-handbook_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000476c.bin
103bcfe53112cc0c9463edef085a7093521e0c6d623ffb9693746c22c56aca36		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476C 25172 bytes
font_01_sfnt_off000080fa.bin
40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80FA 3884 bytes
font_02_sfnt_off00008da2.bin
4a85ad6ffc73ad9b3f41fceca22de32e3ce7595015d69f53ae753139e52ac9f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA2 18904 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.