Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef7cf93eed83f9fa…

MALICIOUS

PDF

24.3 KB Created: 2021-06-17 21:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9865e59536e2fbc286aa9f89e51168cf SHA-1: c0693a017ed2538a72f0e2b7d34c158e1e93f354 SHA-256: ef7cf93eed83f9fa82a8437dc8fc761019d0684dcd5ba3a10b1ddaf6ae4f2561
74 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 3

  • 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.
  • 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-robux-hack-that-easy-and-o-game-hack PDF link annotation
    • http://perpus.fisip.unnur.ac.id/repository/hacking-roblox-copyright_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/crate-opening-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-free-hood_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/chrome-shortcut-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-just-for-singing-up_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C3 23116 bytes
SHA-256: c240c75573b1eaf22f9eccb2de9fb04b6f7e3dfc79b611c81c31ebefbcc5ac17

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