Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2d04be1fc53e5a…

MALICIOUS

PDF

41.3 KB Created: 2021-05-15 10:00:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0e9c024f32cf6670ce25b2154c3c81e5 SHA-1: e37bd013157e36a9916c62a783a19cfd415d729f SHA-256: 3e2d04be1fc53e5a27fe78644153124f046fd10a8002a4f0d4914db5dc37e838
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links designed to lure users with promises of free game currency and hacks. One primary URL, https://netcdn.xyz/app/406889139/collect-free-spins-for-coin-master-game-hack, is identified as a malicious redirector. The document's structure and content suggest it is part of a phishing campaign aiming to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/collect-free-spins-for-coin-master-game-hack In PDF document text
    • http://yochin.org.tw/images/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://yochin.org.tw/images/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://yochin.org.tw/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://yochin.org.tw/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://yochin.org.tw/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://yochin.org.tw/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://yochin.org.tw/images/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://yochin.org.tw/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://yochin.org.tw/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://yochin.org.tw/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://yochin.org.tw/images/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://yochin.org.tw/images/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://yochin.org.tw/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://yochin.org.tw/images/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • http://yochin.org.tw/images/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://yochin.org.tw/images/picture-roblox_GM431946152.pdfIn PDF document text
    • http://yochin.org.tw/images/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://yochin.org.tw/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://yochin.org.tw/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://yochin.org.tw/images/coin-master-free-soins_GM406889139.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_off000048be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48BE 24160 bytes
SHA-256: 0fa0354e97544abb8276a4a984edd2e32dbf0996e60416d4cdb18b2dc603b9be
font_01_sfnt_off00007fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEA 17960 bytes
SHA-256: 56908844ab102c912342fec259dbf5a97100868d5d877c05497f82053eb67f28

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