Malicious PDF — malware analysis report

Static analysis result for SHA-256 d852f7be9d460715…

MALICIOUS

PDF

42.6 KB Created: 2021-05-12 16:19:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5b841652240357c700ad93c335f574ff SHA-1: c18a1ec4cbc77055d54c35aaee0be666ede68487 SHA-256: d852f7be9d4607154b255df36f52e1c45ffdd6b5e96531d7c52ec165bd22fd3e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a free game hack or generator. The primary link, https://netcdn.xyz/app/479516143/best-free-hacked-client-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to trick users into visiting malicious sites, likely for further malware delivery or phishing. No scripts were extracted, but the PDF's nature points to a social engineering attack.

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/479516143/best-free-hacked-client-game-hack In PDF document text
    • http://www.sbairs.com/datas/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-coin-coin-master_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_off00004c0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C0B 25128 bytes
SHA-256: 9bf0280efbd145c150557eb0b4c77153f2ceb80d8ac5bb0996704e2c38536b5a
font_01_sfnt_off000084db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DB 18200 bytes
SHA-256: f9e1919cba188461631b4d1f41fa639bbd05523e10553c39d41e2ec7b66d941b

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