Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e95c46cbdc8ba3f…

MALICIOUS

PDF

47.7 KB Created: 2021-05-10 15:43:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 79996dcd08775b45fdf54fb0fd08f4fe SHA-1: 80fd842629a5f9191b7c7e5d8aa71f1fa57f02a5 SHA-256: 9e95c46cbdc8ba3fad097834db241a295d0e54e6b4ff8ecdd7f79bfeaa0add45
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 0.9920

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/free-robux-exe-game-hack PDF link annotation
    • https://www.nema.go.ke/images/lots-of-robux_GM431946152.pdfIn PDF document text
    • https://www.nema.go.ke/images/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.nema.go.ke/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.nema.go.ke/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.nema.go.ke/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.nema.go.ke/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://www.nema.go.ke/images/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • https://www.nema.go.ke/images/get-robux-today_GM431946152.pdfIn PDF document text
    • https://www.nema.go.ke/images/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://www.nema.go.ke/images/coin-master-links-free-spins_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_off00003e7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3E7F 42636 bytes
SHA-256: 6f204668a97329b86cb80d1997219225fe61cdaf932df9437cb59c8cc693382d
font_01_sfnt_off00009a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A07 18012 bytes
SHA-256: 1e3fda203f08fe42ab00f6cef97e605bb68f7e374108f28afe3c353055d0c9d6

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