Malicious PDF — malware analysis report

Static analysis result for SHA-256 76f7f061cb779365…

MALICIOUS

PDF

40.8 KB Created: 2021-04-29 03:15:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8159b8d38734aed522db4efe4c171ad5 SHA-1: 1a6f882cd1f02f36b6f12dda04fd970c0843e431 SHA-256: 76f7f061cb77936551951f8153b224343d748c4c57750b6bea427d927f1e0c42
82 Risk Score

Malware Insights

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

The PDF document contains a lure related to game hacks, specifically for Roblox and Dayz, directing users to a suspicious URL. This URL, along with others found in the document, likely serves as a redirector to malicious content or malware downloads. The presence of a visual download button further supports the malicious intent of tricking the user into clicking the link.

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-dayz-cheat-code-game-hack PDF link annotation
    • https://www.malesse.com/ckfinder/userfiles/files/no-virus-hack-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/get-a-free-promo-codes-for-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/roblox-is-asking-me-to-free-space-help.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-robux-obby-limited-time-only-2021.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-robux-no-virus-hax-free.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-robux-on-ipad-pro.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/crimson-roblox-hack.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/hack-bleach-new-hope-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/how-to-get-free-robux-without-a-human-verification.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/how-to-make-free-admin-game-roblox.pdfIn PDF document text
    • https://freerobux.cyouIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00004189.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4189 26040 bytes
SHA-256: 67e4724c8228e8258c7669e217f3c0979ecbfea6d5f0cc4d3590eb89a3eceb00
font_01_sfnt_off00007b91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B91 18884 bytes
SHA-256: 3a0e4eff6745280146db8b008cd7522a8088437dae45129148c8fefb151459ca

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