Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7fe76f0f886f21…

MALICIOUS

PDF

42.3 KB Created: 2021-05-21 16:21:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a7ef1a707b6a7406ebb14138562b1534 SHA-1: cb25a39feaea42082c96bbd0426f20346c1ef90d SHA-256: 3e7fe76f0f886f211aaaf1cdc6215bf4c01bfacd6bb55fb2b2167cc4bdceb422
82 Risk Score

Malware Insights

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

The PDF document displays a fake CAPTCHA and a call-to-action button, aiming to trick the user into clicking a malicious link. The primary link, https://netcdn.xyz/app/431946152/how-to-get-free-outfits-on-roblox-game-hack, is associated with a lure for free in-game items. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a potentially malicious website for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9506

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/how-to-get-free-outfits-on-roblox-game-hack PDF link annotation
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/oprewards-com-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_off00003622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3622 35524 bytes
SHA-256: c4b7033e49144bb596aa60f7726df057d4abb8c61cd71716a615c2a79fb5b7c2
font_01_sfnt_off0000840c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x840C 18476 bytes
SHA-256: 4c550287b1f7582f932e33e2a3ce93633f0afb7f6cd43646c0383227d45fb2b9

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