Malicious PDF — malware analysis report

Static analysis result for SHA-256 c37ef286591a3912…

MALICIOUS

PDF

42.0 KB Created: 2021-04-26 01:08:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4cae0f5a96173057d51678e09815e7da SHA-1: 2d024ab026f61d679faa864c05baf48277758604 SHA-256: c37ef286591a3912f728bc13f8cae59223a49859eae0f675e629f2c80371ed79
160 Risk Score

Malware Insights

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

The PDF document contains multiple links, with one prominent URL leading to known malicious redirector infrastructure. The document body and heuristics indicate a lure for a 'Roblox Lifting Simulator Cheat' and a 'game hack generator', suggesting a phishing or scam attempt. While no scripts were directly extracted, the PDF structure and embedded links are indicative of an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/roblox-lifting-simulator-cheat-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/how-do-u-become-a-hacker-in-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-no-downloading-apps.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-para-roblox-robux-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/what-happens-if-you-get-suspected-of-cheating-on-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-roblox-acocunt.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-bee-swarm-simulator-2021-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-phantom-forces-hack-lua-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-by-watching-ads.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/www-roblox-com-robux-free-download-no-surveys.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-your-self-getting-free-robux.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
stream_003_off000042b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42B6 27132 bytes
SHA-256: b8cd5d8a3e1642d242094757480bb670a32047fcd9133ffee14428b581bcf2d7
font_01_sfnt_off00008031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8031 19088 bytes
SHA-256: e4d3100440217db5bfa5b305c5a8392426e89ccc8019160100b4e6684596c9ea