Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae63173de02d99d…

MALICIOUS

PDF

33.8 KB Created: 2021-06-25 12:19:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9024281cce137922168590f87cd85ea1 SHA-1: 58887d7325063c9420c983df9805cedcd07e4bbe SHA-256: 8ae63173de02d99df41eff525c9d66a1951fbad891c1d9af17b360986b7f1cb4
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 currency. The document body and heuristics indicate a clear intent to redirect users to potentially harmful websites, likely for further exploitation or credential harvesting. No scripts were extracted, but the PDF structure itself facilitates the malicious 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/can-you-cheat-engine-roblox-game-hack In PDF document text
    • http://library.futureuniversity.com/repository/free-robux-generator-no-verification-pc_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-no-bot-verification_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-pastebin-free-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-roblox-script-loader_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-download-wall-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-make-a-badge-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/creator-of-slx-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-ps4-free_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_off00002e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E47 21840 bytes
SHA-256: d04ba1d46a934b20ce7615e805dff415fd6fb4c420d16f099d86ff8f386dcb84
font_01_sfnt_off00005e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E77 19180 bytes
SHA-256: a1c45eecd8049ea4f0f0238194f7e9a52bfd211ca210c53c5a12d11d2597809f

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