Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc6e79fc95e69ea1…

MALICIOUS

PDF

35.4 KB Created: 2021-07-19 20:32:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 364630a6479fa1bf2901f0c1a9265489 SHA-1: 65a408a827fede15d9ef96b9ebb3af2fe2e0319f SHA-256: fc6e79fc95e69ea10228b20569e411b3f3635643c56153c9fade1267ef4acee6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free Robux' or game hacks. The primary lure URL is http://netcdn.tw/app/431946152/get-free-robux-now-game-hack, which is flagged as malicious. The document body and embedded links suggest a social engineering tactic to trick users into visiting these sites, likely leading to further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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.tw/app/431946152/get-free-robux-now-game-hack In PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-robux-script_GM431946152.pdfIn PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/how-to-get-free-robux-easy_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_off000035e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35E8 22416 bytes
SHA-256: fe561a4fd5289f34bda76e0ac0d7dd919d9704345a67df8bc37cb88257128f65
font_01_sfnt_off00006806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6806 18468 bytes
SHA-256: 952cd73f503fc30f976e7becd71335f77916a99414e1f81ed868d11088280245

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