Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd2f4d07bcaf02db…

MALICIOUS

PDF

43.8 KB Created: 2021-05-12 07:03:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 971f3b89ecb9db0c615df6042e777456 SHA-1: 4eba06454c9ee0ff150001d8a942d4d4f12d2120 SHA-256: cd2f4d07bcaf02db445ef092d6ddcf56f71251028d00e5f1d7c8dfdffe24aedd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-earn-robux-by-playing-games-game-hack PDF link annotation
    • http://meisterhaus-guterl.de/images/grab-points-login_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/roblox-earn_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-free-spins-glitch_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_off000048e0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E0 26376 bytes
SHA-256: ab1c966a123c96734736fcc37b754cef79f99114c9f98bafef144d81410b66c7
font_01_sfnt_off000085a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A0 19320 bytes
SHA-256: a1584dac0915afffe374fd321a91a63158f116b97d599b0b15246117d282c726

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