Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ce43231973aca2…

MALICIOUS

PDF

41.0 KB Created: 2021-05-01 19:48:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ecd4e10f1ab74b5d28978d9ef0dca342 SHA-1: 81b12c63af36da879da83bdd7862484c7b63cca0 SHA-256: 05ce43231973aca2e0f9d930ac35fa09d160aab28c41b13c09d4657c5e410687
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a 'Roblox Jailbreak Hack' generator, which is a common lure for malicious content. The ML classifier strongly flagged this PDF as malicious. The embedded URL likely leads to a second-stage payload or a phishing page designed to exploit user interest in game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/roblox-jailbreak-hack-raspberry-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/roblox-cheats-phone.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-close-for-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/best-hack-for-robux.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-denis-shirt-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/counter-blox-roblox-offensive-hacks-wall-hacks.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/zombie-rush-roblox-cheats.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-headphones-roblox-catalog.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-online-on-jailbreak.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-shirt-roblox-avatar.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-free-robux-redeem-codes.pdfIn PDF document text
    • https://freerobux.cyouIn 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_off00004278.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4278 25132 bytes
SHA-256: 108cc6168dcedb789d027068bb49b8cdba9a2e82ee29c86448e2e54459af94cb
font_01_sfnt_off00007d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0B 18824 bytes
SHA-256: 785c59b676933a179333987197d2de797870d1ed7dc6f1227737721ab8006d75