Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c3383bdab1fc35c…

MALICIOUS

PDF

34.4 KB Created: 2021-06-17 20:41:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ca6bdb7f11a5179825fac91121e10470 SHA-1: e429b3c8a1d2be57421de12192b6a12b7d75bc64 SHA-256: 4c3383bdab1fc35c2e6ba6741869a68334531abbb8694d07d99c8295cafee9a4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of offering game hacks and free currency for popular games like Roblox and Coin Master. It contains multiple embedded URLs, including one pointing to 'netcdn.co', which likely lead to malicious sites or further malware downloads. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure and embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/roblox-hacked-pour-avoir-des-robux-2021-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-doge-mask-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-rc7-roblox-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-imagine_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/gun-script-hack-roblox-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/download-hack-coin-master_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_002_off00002e6b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E6B 21960 bytes
SHA-256: ca605fbe38a69f86def71438ab57a445d053fc17776c2da461f306e0fba57bb3
font_01_sfnt_off00005eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB6 19928 bytes
SHA-256: bbeb6f00be32a03c791d3f87f7c3ee56d9b45891635b68219c9213ae8e6b8e72

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