Malicious PDF — malware analysis report

Static analysis result for SHA-256 8934cc3a4042dfd8…

MALICIOUS

PDF

41.1 KB Created: 2021-04-28 06:52:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58933b387ff16d2c15cb29a134c1dc87 SHA-1: 7b7b0f3869c3f8f812fb5869c8a3f26bf30406d6 SHA-256: 8934cc3a4042dfd875342a7cec0f39ee3c21117950bb276a10c5233aca116925
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on a 'free generator / game hack'. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content or further stages of an attack.

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/free-robux-app-com-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-obby-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-how-to-get-for-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-pour-roblox-apocalipse-rising.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-you-get-free-robux-hacks.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-dungeon-quest-noob-vs-pro-vs-hacker.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/are-any-boys-free-in-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-digimon-aurity-hack-fast-fire.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-hack-alan-walker.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/c00lkidd-roblox-hack-client-rc7.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-make-free-robux-games.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_off00004178.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4178 26808 bytes
SHA-256: 640fe5e1f51b68b0b861aa8b22757e5c63d5dfb4fcfe693f98b624394facb8f8
font_01_sfnt_off00007e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8E 18448 bytes
SHA-256: 3403bd2243eb758528618b1673144299b9b33b605f4c67ebe1c049b49d6289a5

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