Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d6455097bfbfb5a…

MALICIOUS

PDF

45.7 KB Created: 2021-06-04 01:00:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3ec6e158c022ee971c9721c57c7f6a13 SHA-1: aad401afbef67a09a15a9a40b48f5078746f32b1 SHA-256: 1d6455097bfbfb5aae295ade514432c827c57d855c2b452289113e151f302218
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generators' and 'game hacks' for popular games. The primary lure URL is https://netcdn.online/app/406889139/coin-master-tiradas-gratis-link-game-hack. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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.online/app/406889139/coin-master-tiradas-gratis-link-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/tiktok-free-key-code_GM835599320.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-earn-robux_GM431946152.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_off00004f2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F2E 24752 bytes
SHA-256: 8f6c805a91cf644e759f68e384a82349b7618039bbc441d602d503b9342f59bc
font_01_sfnt_off000086e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E8 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000090d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D3 17888 bytes
SHA-256: 7e3d0d6e3169ec9d1b4a39f1a8de513868e09ebca0bcabadf274b5e058877262

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