Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2ff2add722e0c6…

MALICIOUS

PDF

36.7 KB Created: 2021-05-23 02:38:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 61f59f4d3de2d806c8946f408d884f97 SHA-1: 919a1bef255864b16ef5aa6eb15bcd6c5a080a10 SHA-256: 2e2ff2add722e0c6fc7da0a7e843852a18ad5817606cf8680eb43974f22d0b66
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 0.9447

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/robux-hack-game-hack PDF link annotation
    • http://www.bernerpupping.at/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bernerpupping.at/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://www.bernerpupping.at/images/free-coin-master-s_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_off00003161.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3161 25848 bytes
SHA-256: 5ccf1466b7fc133ec3f612e1ba0aa56f212c01ccbebb8b7899685fac4f841c23
font_01_sfnt_off00006e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E22 18248 bytes
SHA-256: dc70545b78036d2d989a53e60713ee6b6ba72604799932bb5b2fc13357d7a02a

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