Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ef1eed994f1ccc…

MALICIOUS

PDF

41.0 KB Created: 2021-05-12 05:42:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b7deb58d33e950cd5b7768c1c9f5cf2e SHA-1: 876ed9d745e06e4881e3f324267d5e5e65a0ec67 SHA-256: 15ef1eed994f1ccc8d43d2be6f2ee8f1f4962ae743ac609c715a260f9420bf39
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free generator / game hack' which redirects to a malicious URL. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/daily-coin-master-spins-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/www-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-game_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/download-coin-master-hack_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_off000045e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45E6 24476 bytes
SHA-256: 90e430f90ffe1d676cc3a30815c1370690f07080ec34fa3f1013dbab09b9b72d
font_01_sfnt_off00007e09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E09 18144 bytes
SHA-256: bc10b16e761ad325a331543066bfce6b0ff34f70478a358edc53294c2ec73427

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