Malicious PDF — malware analysis report

Static analysis result for SHA-256 439536243398b67e…

MALICIOUS

PDF

35.6 KB Created: 2021-06-30 08:44:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 690a7c44320360585fabf5e839176a72 SHA-1: bcca62d4144619baf4d6df88303603c0e26bd3a4 SHA-256: 439536243398b67e3a32fa5c73b2eb140cf8a7aaf8c6f97dc6a654cdb947bab9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as generators or hacks for popular games. The primary link, http://netcdn.co/app/431946152/roblox-jailbreak-hack-script-2021-game-hack, is identified as a malicious redirector. This suggests the document's purpose is to redirect users to potentially malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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-jailbreak-hack-script-2021-game-hack In PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/robux-earner_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-stuff-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-robux-group_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/roblox-how-to-hack-with-ceat-engine_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-download-roblox-apk_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/coolkid-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/robux-boost_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-robux-games-on-roblox-real_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/mega-cheat-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-get-free-robux-on-pc_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_off0000319e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319E 22676 bytes
SHA-256: 0476c2b0687d9be2733dceade51deda82736b2c2ef96f41460b11ba0b06bb78d
font_01_sfnt_off00006467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6467 19624 bytes
SHA-256: 2734742264cf1c02f26abf54efb44ebc07fce0d5d120827c14a369351ed123bf

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