Malicious PDF — malware analysis report

Static analysis result for SHA-256 f20c2f319a67d90e…

MALICIOUS

PDF

38.3 KB Created: 2021-05-22 21:12:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 724d35a75add07c67f990dd16f79dcc7 SHA-1: dd73e24aea49ac7b2685b2cc6c34ee8cb8ab0408 SHA-256: f20c2f319a67d90e133637715a5b5db36da0a0a70a489ba69eb6f3a27aa918c1
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, instructing the user to click a link to obtain free TikTok followers. This is a common social engineering tactic to trick users into visiting malicious websites or downloading further malware. The embedded URL and numerous other suspicious URLs point to potential phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/835599320/free-tiktok-followers-no-human-verification-or-survey-2021-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-discord_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_002_off000030cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30CB 28828 bytes
SHA-256: b175ffb528ddb0ebc10509f7fe6e814df31a1a2244255070e659eb954b48b7b8
font_01_sfnt_off000071ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AC 19152 bytes
SHA-256: c6aae516a535c20688ad74e4aa12997c302b82eea592ee03757e951f101f6a27

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