Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dfd42248a42b0f…

MALICIOUS

PDF

43.9 KB Created: 2021-05-24 07:12:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: ef90a926a32c5c999c5b7ab125933d3a SHA-1: 1212dfa0dbb90a7d4160e7cf4be5c9216f8ba317 SHA-256: c5dfd42248a42b0f9b2cf13286b34053698e4d44dd528fb71ededc77fcf80106
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7947

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-quiz-game-hack In PDF document text
    • https://donrazvitie.ru/images/coin-master--hack_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/free-robux-real_GM431946152.pdfIn PDF document text
    • https://donrazvitie.ru/images/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • https://donrazvitie.ru/images/withdraw-robux_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_002_off00003010.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3010 29092 bytes
SHA-256: 5e77c014a156cc46aa23f5053b7c1d1dbfaf8b25f70638b953f1c287df8d13cd
font_01_sfnt_off0000730a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730A 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00007cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB4 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off000089c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C5 18376 bytes
SHA-256: b52519a3f27e6183245bec6d77d3cda93d913202ea7147b0d6d9048d316cd5fc

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