Malicious PDF — malware analysis report

Static analysis result for SHA-256 8540cdb3de5c43e7…

MALICIOUS

PDF

41.3 KB Created: 2021-04-27 02:31:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 522e28a77e7ec0dcaca9b4fb94be73bc SHA-1: ad17f4060d87ec8d0418c9c4602774b9ad50979d SHA-256: 8540cdb3de5c43e7f5ccfd8d53f0b50043d8cca5f9633fc6188fbf0c845b14a4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and generators. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-free-boombox-script-game-hack. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful websites.

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-free-boombox-script-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/sword-fighting-roblox-game-free-to-copy.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/can-you-go-to-jail-for-downloading-hacked-on-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/moon-tycoon-roblox-gives-free-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-dinosaur-simulator-cheat-engine.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-hack-into-files-to-get-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-roblox-toy-redemption-codes.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/robux-hack-no-human-verification-android.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hats-roblox-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-models-for-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/infinite-money-hack-roblox-jailbreak.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_off00003f61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F61 28264 bytes
SHA-256: b6be5d46f9c2ee7257db9314bd101dcaee8828669a8274fd158aea7d3148984a
font_01_sfnt_off00007ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED8 18608 bytes
SHA-256: f7610927bad802598789a30f055a5e80d42ab08ef0b3beb9fde30a0bb4634e3e

Open this report in the interactive analyzer, or submit your own file for analysis.