Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9cbf8e8c645f9f…

MALICIOUS

PDF

44.6 KB Created: 2021-06-11 02:00:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9f89a7aee66a81d36934b87be0fa0444 SHA-1: 2e15be3c55989f54945197c351ecc67b212540c3 SHA-256: 3d9cbf8e8c645f9fdfddf79cf56f31ee3e43530a848e38424dac057678879eba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Roblox Glitch' and a direct link to an external URL, suggesting an attempt to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious with a high probability. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/free-items-katalog-roblox-glitch-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/counter-blox-roblox-offensive-hacks-marca-los-objetivos_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-2all-site-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-free-anamations_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/make-free-roblox-shirts_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-airport-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-hack-prohosts-org_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/minecraft-font-free_GM479516143.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_004_off00004f40.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F40 25284 bytes
SHA-256: 60ff27eb7613edff6d828d67f83a7d0be680bb262135bfdcafdda1b887a41a5d
font_01_sfnt_off00008946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8946 19112 bytes
SHA-256: 69d4bd15b5d4fb8b973d7f511234a9d70d486c56c939dfe7e281b35c97b9b5b2

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