Malicious PDF — malware analysis report

Static analysis result for SHA-256 f43ec88e6988ded6…

MALICIOUS

PDF

44.1 KB Created: 2021-05-14 04:47:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 495c525f44a53070f7dec8e5d30483c4 SHA-1: 2603a91eabbdf13a821db71a3f28e5532007b647 SHA-256: f43ec88e6988ded603b6a8889ec42753fbc2939b0007946c891ff45d82635a02
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering 'free generators' or 'hacks' for the game Roblox. The document body, though heavily obfuscated, contains references to Roblox and URLs that are also present in the extracted URL list. The primary function appears to be directing users to potentially malicious sites under the guise of game-related cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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-hair-boy-game-hack In PDF document text
    • http://gazelletr.com/userfiles/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/get-me-robux_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/get-robux-today_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/oprewards-robux_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47EA 28892 bytes
SHA-256: 6a302099baba657554c84913aa8167fa9c68888d6ca0754cb67049eed9d4009d
font_01_sfnt_off000089b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B8 18476 bytes
SHA-256: 3fabddb91e4eaecc087c17f99b1c80be23524e7eab6cbec0e1034232c0cbaaac

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