Malicious PDF — malware analysis report

Static analysis result for SHA-256 4069b0d49ea4e1bb…

MALICIOUS

PDF

41.5 KB Created: 2021-04-26 02:42:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6cd59f87b1d0eabbca3ca58423d8c08a SHA-1: 277e239bdbe6bcee798b611ad821e1f861477f7d SHA-256: 4069b0d49ea4e1bbe39ff09a67a013d8c5c2357834e62009908b1a4529b05658
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to a URL associated with game exploits. The document body, though heavily obfuscated, contains references to game hacks and URLs, reinforcing the lure. The presence of multiple embedded URLs suggests an attempt to direct the user to potentially malicious content or downloads.

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/qtx-roblox-exploit-free-game-hack PDF link annotation
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-assassin-free-knife-codes.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/get-50-00-robux-free.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/is-roblox-free-to-play.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/hack-in-roblox-account.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/safe-free-robux.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-free-robux-without-downloading-anything.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/does-cheat-engine-work-for-roblox-2021.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-hack-no-verification-2021.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-look-girl-free.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/comment-hacker-robux.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_off000042ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42AD 27704 bytes
SHA-256: 1f4e9259128c7b6763e30afd698fe92236e199bb1f7cd9dd9c232973b79e5de1
font_01_sfnt_off00007fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAD 18504 bytes
SHA-256: abf22a681682e74aa2b5d0647ff00139de9ec7b39c46168b21caa400d4605671

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