Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95778a445048751…

MALICIOUS

PDF

35.5 KB Created: 2021-06-27 07:04:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e53565f40c942dbe7355cb70e6b84d2f SHA-1: b0fc6c6cd7985fa3c8166a07ea075a076bdebbb6 SHA-256: b95778a44504875125b8a1899233dd0a4c92e5eef5aebec36f13514b41df97df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and embedded text promoting 'free Robux' and 'game hacks', which is a common lure for phishing and malware distribution. The primary URL, http://netcdn.co/app/431946152/free-robux-ez-points-gg-game-hack, is identified as a malicious redirector. This suggests the document is designed to trick users into visiting potentially harmful sites, likely leading to further malware downloads or credential theft.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-ez-points-gg-game-hack In PDF document text
    • http://www.sbairs.com/datas/files/how-to-walk-through-walls-in-roblox-jailbreak-no-hacks_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/catalog-roblox-free-hair_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/rbx-free_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-ore-tycoon-2-bag-obby-cheats_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-adidas-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-chat-hack-v1-0-script_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-hack-app-for-iphone_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
font_00_sfnt_off00003332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3332 22444 bytes
SHA-256: bf9685d6c47a536c7250a7d26d9f819bab8258ae6aa7caa3002d191bac99f5f8
font_01_sfnt_off00006531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6531 19176 bytes
SHA-256: 8f630e6fccb20715b347c08b8bd22406628fdfdf2a6814ddd153eef2022a6b8d

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