Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee6e8a86b5cd6ab…

MALICIOUS

PDF

41.4 KB Created: 2021-05-17 02:28:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbd9db2cb754148d4ea776ae5fbe613d SHA-1: 94bb2a33039ad74db578eba0b2fdd7b85fba3ae0 SHA-256: eee6e8a86b5cd6ab966ecee5bbebacbcc550c8d354d3e10b2c92728e06be1223
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting "game hacks" and "free spins" for games like Coin Master. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple redirector links indicates a clear intent to lead users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs are sufficient to infer a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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/406889139/coinmaster-free-spins-link-game-hack In PDF document text
    • http://apx-centre.ru/images/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/easy-robux_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/google-moon-active_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-app_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/robux-sites_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-coin-master-spins-2021_GM406889139.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
font_00_sfnt_off00004844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4844 24520 bytes
SHA-256: 0d582c4950d8533e3e2e21a1fe1fb28c80ce5bab33b0de4dd29141936f7ea9ad
font_01_sfnt_off00007f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F53 18316 bytes
SHA-256: e23e47edf411310e4720a9a584017679d42dc8e6fe25c1f08798108aa15add5d