Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcbe1a08e6a8cf7d…

MALICIOUS

PDF

36.3 KB Created: 2021-05-14 02:30:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e2777cb05b0aec65f176ecba83e89810 SHA-1: ab5fd8513e1dada8fbeb26995b7c65cbf1cf7201 SHA-256: dcbe1a08e6a8cf7d6f84b93fb55d19500810ac074bdcef4f54ad76b2c51c2512
92 Risk Score

Malware Insights

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

The PDF document contains a lure for a "free Robux generator" and displays a fake CAPTCHA, aiming to deceive users into clicking the provided link. This link, https://netcdn.xyz/app/431946152/free-robux-hack-no-human-verification-game-hack, leads to a malicious website. The document's structure and content suggest it is intended as a phishing or scam document, likely delivered as an attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0284

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-hack-no-human-verification-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000031f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F4 24624 bytes
SHA-256: bd6b86e2650697c32b04fcdd5c75ee300dc9d4f4abaf24d083ad3e028a89a2d3
font_01_sfnt_off00006a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A42 19028 bytes
SHA-256: 768a4e91d7c3975acc2b79a699acb909e0f8bbf2befa87684aa1b4f9aecc197e

Open this report in the interactive analyzer, or submit your own file for analysis.