Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1615110c9ad03b3…

MALICIOUS

PDF

36.9 KB Created: 2021-05-19 15:03:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 794331f8d9269fd4aaa9eb1289d37c60 SHA-1: 785b494c23f1b8994fbe532819c9b255d6b178cb SHA-256: e1615110c9ad03b3edb4501f410b1e3892dab9da84434b579e926e725ceae323
92 Risk Score

Malware Insights

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

The PDF file contains a lure related to hacking Roblox for Robux, presenting a fake CAPTCHA to trick the user into clicking a link. This link, 'https://netcdn.xyz/app/431946152/how-to-hack-roblox-for-robux-game-hack', is identified as a high-risk redirector. The document body, though partially garbled, reinforces the theme of game hacking and includes a call to action for a generator.

Machine Learning

  • Nyx PDF Classifier clean score 0.0313

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/how-to-hack-roblox-for-robux-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C8 26172 bytes
SHA-256: 08868fa18205e835eeabf5257d20b3a12c3fe8cf69a3246706a1bde848d9e8a8
font_01_sfnt_off00006dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC3 18648 bytes
SHA-256: 7689b6731d47fc176aef925fc5194a10a34d162e90d7014a3ccea13949bcaf7e

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