Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e05db3cefd5b2f…

MALICIOUS

PDF

44.9 KB Created: 2021-06-10 15:13:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 18077ac5b4c6263e71ae1ce33e0f9f90 SHA-1: 10f698bf8965d8f8327a8fe7772fc2c643ad4414 SHA-256: 69e05db3cefd5b2f2dcf9c831afea94ec905e506daf37ab4162b5c1b9ec05e64
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA or human verification prompt, a common lure to trick users into clicking malicious links. The embedded URL, https://netcdn.tw/app/431946152/robuxlive-stream-roblox-hack-game-hack, is likely the destination for a second-stage payload. While no scripts were directly extracted, the PDF structure and heuristics suggest it's designed to exploit user interaction for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9870

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.tw/app/431946152/robuxlive-stream-roblox-hack-game-hack PDF link annotation
    • http://halitbayramoglu.com.tr/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/robux-apk_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/hacks-para-roblox-phantom-forces-2021_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
stream_004_off00005151.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5151 24912 bytes
SHA-256: 3442e4bd43328ee87722d46d1cb1a00574bcc753b5e7a1d285af62457b32c335
font_01_sfnt_off00008afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFD 18920 bytes
SHA-256: 95f73c5bfcc2fc3b5546bf600d388ba411f536695aa08e220d209d3f0ef0a488

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