Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f9d6eec7fb4dd6…

MALICIOUS

PDF

51.2 KB Created: 2021-06-04 01:43:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c8b57f59b02f561fdf3fc6f6e4f52110 SHA-1: bfa61b5c78399d368844a0ec5b4a216d50639eba SHA-256: 09f9d6eec7fb4dd60c1b23fba171d043b33bcc2822b33ed0d143fad930f37609
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically targeting Roblox. The embedded URL leads to a domain known for hosting such lures. While no scripts were extracted, the PDF structure and heuristics suggest it's designed to trick users into visiting a malicious site, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9861

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 https://netcdn.online/app/431946152/www-roblox-com-free-robux-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-hack-no-human-verification-or-survey_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
stream_004_off00005317.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5317 36648 bytes
SHA-256: 1870cffa334cf983fe19ad3d7abccc2ad6907634e79e9f462b5bfed46099cc97
font_01_sfnt_off0000a4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4CA 18708 bytes
SHA-256: 62c028800c68fb05578d3bf96b402573c397accdba69624e3c020ffc1692f811

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