Malicious PDF — malware analysis report

Static analysis result for SHA-256 23d427c156b06162…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 18:12:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7b554250f27a8b272940cf0b5e98b93e SHA-1: e1d86b8c52d5e9997282b8ee076f0a20af87175e SHA-256: 23d427c156b06162f2a18b6498145bec6dc89c3b00a237bec6af2f5fd2e97b98
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous URLs pointing to sites offering game hacks and cheats, suggesting a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a call-to-action phrase reinforces the suspicious nature. No scripts were extracted, but the overall pattern indicates a lure for potentially harmful downloads.

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/games-to-get-free-robux-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/pastebin-roblox-free-obc_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/glitch-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-pe_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-horror-games-multiplayer-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-tiktok-email-and-password_GM835599320.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-download-of-roblox-game_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/tiktok-free-pc-download_GM835599320.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-apk-android_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_off00002e42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E42 22476 bytes
SHA-256: 66552212c99bf90fdfaaa1a439e4cc997f915441660043f6d62e3b87211eda3e
font_01_sfnt_off00006074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 19080 bytes
SHA-256: 03ba3cd79afa517eed98ce6a768f8c6318a94a6bbf9eb4faa980b5a438220dad

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