Malicious PDF — malware analysis report

Static analysis result for SHA-256 7930393599f1c426…

MALICIOUS

PDF

51.4 KB Created: 2021-06-10 13:53:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 378a257b7b108d6b1a64e2718c3a62bb SHA-1: 6464dffe9af68f14241b0041638bf83458397ae1 SHA-256: 7930393599f1c426053eabf172cd21b4c2ddd30f72c6deb4f474e6cba773f420
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9724

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/how-to-get-free-robux-easy-2021-december-game-hack In PDF document text
    • https://amiranet.com.br/files/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://amiranet.com.br/files/files/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/slurp-download-roblox-hack_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://amiranet.com.br/files/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://amiranet.com.br/files/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://amiranet.com.br/files/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • https://amiranet.com.br/files/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://amiranet.com.br/files/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://amiranet.com.br/files/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005341.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5341 28400 bytes
SHA-256: fc130ac3a9e97805006d7035ba0f9248270d5354aa7b10f5bce4a0cf1825035e
font_01_sfnt_off000095a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A9 3656 bytes
SHA-256: 63a179d8a9645bea05c6d53b1776faf4e4a7281930de6cf484e639846bec2e20
font_02_sfnt_off0000a263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA263 19520 bytes
SHA-256: 7ec06345e93e281d0b06feb9ba108053f0e5cce57e4e562632f9a668c24a2d3b

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