Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fd2d127aaff3d9…

MALICIOUS

PDF

32.7 KB Created: 2021-06-19 08:24:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f95b83f423b783ae4ecf517426f3e477 SHA-1: 1f965ca5f5519bcbdf007009992b1fbff830e648 SHA-256: 74fd2d127aaff3d9d78b2c87f3fb065f49d1900a70a7ca35fba427fe7bb729f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a "free generator / game hack" lure, which is a common tactic for distributing malware or leading users to phishing sites. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-form-studio-roblox-game-hack PDF link annotation
    • http://library.yamasi.ac.id//repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/site-17-hack-gui-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-critical-strike-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/tiktok-free-like-followers_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/pokemon-go-free-ditto_GM1094591345.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/unpatchable-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-do-you-get-admin-commands-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-pc_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_off00002999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2999 21940 bytes
SHA-256: 3b760bd1903b6f3cc2653faccc34c9ed9cbefc0dc5344a2dc714e332df30931b
font_01_sfnt_off00005a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A02 19448 bytes
SHA-256: 09d5efb539d2face38e23463a1c06cf9f7219d89539242d4c21e9b9fad533994

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