Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd5e3c5f0d33ce9…

MALICIOUS

PDF

40.0 KB Created: 2021-04-26 00:44:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 23b08f51f161633d2d706c64a97e2fdb SHA-1: 538739fad616357a3699b93a873d1e64952e890f SHA-256: 9bd5e3c5f0d33ce92820e884263c72387db737a92952a14de50b1f417fede6d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with 'game hack' lures. The embedded URL points to a known malicious redirector, which likely serves as a gateway to further malicious content or exploits. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

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/hacks-for-roblox-kat-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-without-human-verification-or-survey-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-my-roblox-account-freee-no-downloads.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/rosie-hacks-caillous-roblox-account.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-free-robux-world.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-spawn-models-in-roblox-with-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-generator-2021-gamingthix.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/tuto-free-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-cheat-in-roblox-super-power-training-simulator.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-information.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-gameplay.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_off00004043.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4043 26504 bytes
SHA-256: 4e57aaa688e886a4d9bd10368a473477b499a0f403bb2928a55bd95af3d17786
font_01_sfnt_off000079f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F0 18452 bytes
SHA-256: 62e6c99d786db38962822b19889e7cc4a759b98aa32915f50bd043e192c70894