Malicious PDF — malware analysis report

Static analysis result for SHA-256 be344d3334075f28…

MALICIOUS

PDF

47.5 KB Created: 2021-05-18 23:47:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb5a0ba2246d6ca686c8d41c6ac1af35 SHA-1: 91d70c308e78e141dfc66c63253893361b025672 SHA-256: be344d3334075f284f5a55cf5f38ca57779a70fcc72de737d645e9591731b051
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/406889139/40-free-spins-coin-master-game-hack. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/406889139/40-free-spins-coin-master-game-hack In PDF document text
    • http://www.vista-design.hr/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/woman-roblox_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-2021-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_003_off00004a75.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A75 30264 bytes
SHA-256: ff9f64f009eef022bb0cfb0688befb7c3d829ca48cb460a598777ca730283811
font_01_sfnt_off00008b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2A 3620 bytes
SHA-256: a7ffd47631dfdffd19913a7d019e14a4e4f6584a4e894343a0be0687632311e4
font_02_sfnt_off000097ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97EC 18120 bytes
SHA-256: adc3b494d1fa0974f6acdf3c8a88f4cec1eca3c3c07b4c24b7a089c53791e33f

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