Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6df77b1d933e44b…

MALICIOUS

PDF

43.9 KB Created: 2021-06-02 16:50:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e5e3610e0504ab59e50e91a67e08beb6 SHA-1: 1285831ed7acafabb2b225311d9201c2112433e3 SHA-256: c6df77b1d933e44bccbc90d61885d95739bfd13fccecdfcd77c87f89b3e79c34
160 Risk Score

Malware Insights

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

The PDF document contains lures for free game currency and hacks, directing users to a known malicious redirector. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free items to redirect them to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/how-to-get-free-roblox-gift-cards-2021-game-hack In PDF document text
    • http://learningarabic.co.uk/images/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/pokemon-go-free-versus-pc_GM1094591345.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-pubg-uc-hack-2021_GM1330123889.pdfIn PDF document text
    • http://learningarabic.co.uk/images/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-spins-coin-master-links_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_off00004eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EAE 24180 bytes
SHA-256: 456e7d8908331e8abe760ab582cb0dfa3cc559ff91e154e0af5ae9205a82252d
font_01_sfnt_off000085f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F6 19140 bytes
SHA-256: be305823f8ee66ee433e093902f581df6774e032ef6d6269e19971839a450125

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