Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2b0cf8546d07cd…

MALICIOUS

PDF

50.8 KB Created: 2021-05-14 20:38:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 078b6a49a2276ea9675c82b849e26cc0 SHA-1: 51a60195ad28a946be30272b5f9e1940989996f0 SHA-256: 9e2b0cf8546d07cdb39bab718ff831f051d178fd02539e4f35e0634b0dad2d50
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick the user into clicking a link and downloading a malicious file. The embedded URL and numerous other URLs point to sites offering game hacks and cheats, reinforcing the lure. No scripts were extracted, but the presence of a fake CAPTCHA and external links strongly suggests a social engineering attack aimed at driving users to download malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/406889139/coin-master-mod-apk-2021-game-hack PDF link annotation
    • http://www.bernerpupping.at/images/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://www.bernerpupping.at/images/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://www.bernerpupping.at/images/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://www.bernerpupping.at/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.bernerpupping.at/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.bernerpupping.at/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://www.bernerpupping.at/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://www.bernerpupping.at/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://www.bernerpupping.at/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://www.bernerpupping.at/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://www.bernerpupping.at/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b51.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B51 25144 bytes
SHA-256: 5dd9c5afae3040630e717eb01c86e482b0efb4c39dc6b09f22d45db499394eb0
font_01_sfnt_off000084b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B1 2880 bytes
SHA-256: 93b508a52e047ef4bff1d7d250d9aefd838e5a176ceb5e9be36ada0f8d333e07
font_02_sfnt_off00008e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9A 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off0000a325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA325 18468 bytes
SHA-256: 3a864882e9e4289fde3385ccd09838686b667c82d90ee6c78e630994fecff89f

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