Malicious PDF — malware analysis report

Static analysis result for SHA-256 c23dfce405820b26…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 05:25:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bdbbf959e125721f484e77cfa4caef88 SHA-1: 8372a79416d69564b833de0a1e0ce5c3145540de SHA-256: c23dfce405820b262f532c0da4104d2acdf23e80f9ab46504e251ac742fba629
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to game hacks and generators, specifically targeting Roblox and Minecraft players. The primary URL, http://netcdn.tw/app/431946152/roblox-legends-of-speed-hack-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the document body and embedded URLs suggest a social engineering lure to download potentially malicious content.

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.tw/app/431946152/roblox-legends-of-speed-hack-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/new-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-download_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-state-of-wrttemberg-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/cite-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/easy-way-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/fidget-knot-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-cool-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-link_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_off00002fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA6 22184 bytes
SHA-256: a194833298899db76c267974e657c1ecfaf360bb1aae21eb9098eb6352b510bb
font_01_sfnt_off00006012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6012 18820 bytes
SHA-256: ec88a37979285ca4a1e038e4941eb3400f2c30920c6c84284804bb8f8368cdd0

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