Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad251ad181a8c493…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 12:35:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47d04600849cd99cab221d1d4e66b2f5 SHA-1: 5350a71cb4afdb9e46d0cb556741f1b4cc699035 SHA-256: ad251ad181a8c493c55504aa5e3d3baac05d390c93923f00b3b7a764b0a908d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to what appears to be a game hack or generator lure, specifically targeting Roblox and Minecraft. These links redirect to known malicious infrastructure, which in turn hosts further malicious PDF files. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful content.

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/roblox-prison-life-hack-download-game-hack In PDF document text
    • http://ig-tauchen.de/images/roblox-tutorial-how-to-get-your-hacked-account-back_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/robux-app_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://ig-tauchen.de/images/gui-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/tiktok-free-online_GM835599320.pdfIn PDF document text
    • http://ig-tauchen.de/images/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://ig-tauchen.de/images/robux-hacks-2021-number_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/facebook-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ig-tauchen.de/images/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://ig-tauchen.de/images/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://ig-tauchen.de/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://ig-tauchen.de/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://ig-tauchen.de/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • 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_off00002f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F67 22552 bytes
SHA-256: c483b5e814aee6c863cbb0e4929eb1b894c496ccd9e36b83a2856f703d3328a1
font_01_sfnt_off00006189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6189 19252 bytes
SHA-256: d5a4c6ce718c182c9ca78eff7c3eeedccdd478d79fb438c70d75dfbe02709fcc

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