Malicious PDF — malware analysis report

Static analysis result for SHA-256 423025a1edb32a95…

MALICIOUS

PDF

46.0 KB Created: 2021-06-02 22:36:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d562d5e364c444a02a6cad85749b2c30 SHA-1: 023fedafd5b69545cac0871ee3ce20e5d21b24dc SHA-256: 423025a1edb32a95bedd6ef5b0c73a4268de23201564258d2437450eb0e309fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and free items, a common lure for phishing or malware distribution. The heuristic firings indicate that these links point to known malicious redirector infrastructure. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it is designed to lead the user to download potentially malicious content or visit further compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-black-shirt-game-hack In PDF document text
    • https://mixdoors.ru:443/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/free-robux-master_GM431946152.pdfIn PDF document text
    • https://mixdoors.ru:443/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/how-to-get-free-300-robux_GM431946152.pdfIn PDF document text
    • https://mixdoors.ru:443/images/pokemon-go-free-qr-codes-2021_GM1094591345.pdfIn PDF document text
    • https://mixdoors.ru:443/images/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • https://mixdoors.ru:443/images/free-robux_GM431946152.pdfIn PDF document text
    • https://mixdoors.ru:443/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://mixdoors.ru:443/images/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://mixdoors.ru:443/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • https://mixdoors.ru:443/images/level-coin_GM406889139.pdfIn PDF document text
    • https://mixdoors.ru:443/images/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://mixdoors.ru:443/images/roblox-robux-hack-generator_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
stream_004_off00004e2f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E2F 28884 bytes
SHA-256: 5e399705d83384ff9f32398a1134ac2aac4c87b829890beb33a0c1d8e32edc45
font_01_sfnt_off00008ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFA 18736 bytes
SHA-256: 1b0d63e3d9f3be55b82bc51ad7d3d534658935bafb761b94df17a54c36ae464f

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