Malicious PDF — malware analysis report

Static analysis result for SHA-256 9021a0683d275d67…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 03:01:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c1ca5648a6516c5f1bfca97fe32583fb SHA-1: 2012008db3fc7b8d326b3155904eb4aa9612b4ba SHA-256: 9021a0683d275d67e6e5c0e8a8a6f69fb3596ae16072b76a77d5c3756ed51f2e
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a heuristic firing indicating it's a game hack lure, specifically mentioning Roblox. The primary URL, http://netcdn.co/app/431946152/roblox-wall-hack-script-game-hack, is likely a landing page for a malicious download or exploit. While no scripts were explicitly extracted, the nature of the lure and the ML classification suggest it's designed to trick users into executing a payload, potentially via a vulnerability or a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-wall-hack-script-game-hack PDF link annotation
    • https://opac.heritagejkt.org/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/island-royale-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/rbx-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-gamepass-script-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/tik-tok-free-fire-judul-lagu_GM835599320.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/exploit-cheat-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-in-roblox-freeee-worksss-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-run-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-a-free-dominus-hat-on-roblox-2021_GM431946152.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
font_00_sfnt_off0000324d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324D 22328 bytes
SHA-256: 64ad1823fc70cee3adb835d481aabe080b10b0a6abb220c22f1b5eb9689a7804
font_01_sfnt_off0000640a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640A 19256 bytes
SHA-256: 42783a0482e3a69638388cffe2ba217f718a3c6bb7010893142b19c4291afbc0

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