Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3991fe01293051c…

MALICIOUS

PDF

40.3 KB Created: 2021-05-01 16:09:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6c38d7e71ff20ca3dd22e17ceb3cb659 SHA-1: 6e163aeea2677c735678b73da0fbd673187aa0ab SHA-256: f3991fe01293051c18a9f69d1549a0092dbbb140de43bd63e9ad78b5781cfd33
82 Risk Score

Malware Insights

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

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to the URL https://netcdn.xyz/app/431946152/cerberus-hacking-roblox-game-hack. This lure is designed to trick users into visiting a potentially malicious site. The ML classifier also strongly flagged this PDF as malicious.

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/cerberus-hacking-roblox-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/fre-sha-voca-do-roblox-id.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-how-to-get-free-obc.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-for-roblox-pc.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-mafia-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/funny-free-roblox-rthro-avatars.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/all-might-roblox-free-shop-t-schirt.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-generator-without-human-verification-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-ro-ghoul-free-yen.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-tab-font-free-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/no-survey-anti-bots-allowed-robux-hacker.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000040bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40BB 25808 bytes
SHA-256: 2d1d2371a0734d1269f7cf9e845db536d36848d1959e653f97b0643f4df28ee3
font_01_sfnt_off00007a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A83 18728 bytes
SHA-256: baafc3c3046712e489d65db5ef2968af898cf28296d98055ff043bf68586cb03

Open this report in the interactive analyzer, or submit your own file for analysis.