Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bea973d1467721c…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 05:54:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8d2c764eff8bb5dace79ce1326046eba SHA-1: 2746e1ac002b366fb5e161bacf74d01b8301003a SHA-256: 3bea973d1467721c424e7dc05c2dc19ce6f71e280e2e145390afa31cd1095d08
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links that redirect to malicious infrastructure, specifically a site offering 'free generator / game hack' lures. The presence of multiple links to similar scam-related PDFs and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or scam campaign.

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.tw/app/431946152/mathep-game-hack In PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-hack-denis-daily-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/pubg-uc-2-all-pro_GM1330123889.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/youtube-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/cool-exploits-for-roblox-totaly-safe-and-free_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-fames_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-you-get-free-robux_GM431946152.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_off000032a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A5 22228 bytes
SHA-256: 86906916ae59f9f66d855c2b348e1df470f78452856ec7703dddde44af35ca07
font_01_sfnt_off00006424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6424 18544 bytes
SHA-256: 49092de834d3f8fc0161edca5c8ffc9035116622ffbf8cd5420aeadd749a8349

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