Malicious PDF — malware analysis report

Static analysis result for SHA-256 7418d657691b121d…

MALICIOUS

PDF

44.9 KB Created: 2021-06-02 02:44:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cef5278bfaff3533dc1a7764d971e209 SHA-1: f6b8d6bfb45eabbeb29ee1542dbdd558e73ecb1b SHA-256: 7418d657691b121d2a7632f609f6f0c936e5ea4535ad64ad2426f51f84c44d8b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF document that displays a fake CAPTCHA or human verification prompt to trick users into interacting with it. It contains an external URI pointing to a suspicious URL, likely intended to deliver a second-stage payload. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/free-robux-console-pastebin-2021-game-hack PDF link annotation
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/backpacking-hack-roblox_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/getbux-win-free-robux_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/roblox-muscle-shirt-free-shipping_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/roblox-hack-killer-queen_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/best-free-fps-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/free-robux-cript-tamper-monkey_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/roblox-how-to-change-your-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/how-to-hack-arsenal-ot-fly-roblox_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/roblox-speed-cheat-codes_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/how-to-hack-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/free-download-roblox-hack_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/claim-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_off000051fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51FD 24672 bytes
SHA-256: 0bd6f603d3a0d3c779238c1aeeaa3ccb3bf214e396fe35327331c0a9c22779be
font_01_sfnt_off00008a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A89 19096 bytes
SHA-256: 259a26155ddd4ecc46fca4da979e6b70eac9ac67d548204821f8b571f4eeb2eb

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