Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d6f6aaa0bc7dcc…

MALICIOUS

PDF

34.3 KB Created: 2021-06-18 12:41:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e3440c72a0d41e5a1fa2e4d4196ddac9 SHA-1: c464b5bf0a97f8a8a0ff2133557a79f71e6973dc SHA-256: 49d6f6aaa0bc7dcc44876a9fe7e1f95503ec5ffab552f41ba7d6e84e31b63961
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free items. The primary malicious URL identified is http://netcdn.co/app/431946152/cool-free-green-shirts-roblox-game-hack, which is likely used to distribute further malicious content or phishing pages. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/cool-free-green-shirts-roblox-game-hack In PDF document text
    • http://bgnails.nl/images/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/prison-life-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-robux-without-hacking-2021_GM431946152.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_off00002ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE1 22636 bytes
SHA-256: 27620f6dac7e251e54f296f81c17fd8dada4df7ee613992b2454b9a01b1fbfff
font_01_sfnt_off000061ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AD 18856 bytes
SHA-256: 59e36e677214c20dc39c689e02633cd8ed759f9ba4af70faf206c0cc3f16b447

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