Malicious PDF — malware analysis report

Static analysis result for SHA-256 344b9db9bc33f89e…

MALICIOUS

PDF

32.5 KB Created: 2021-07-05 16:00:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fb0aeeb3b70472a6a88e18e50d60d6b3 SHA-1: 60c8b6d8eb750f4cb14e2f252e7fec67634cc0e7 SHA-256: 344b9db9bc33f89eff5507dd72429700e956e549da0d9dde2c65708cdf8c3306
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including a high-priority lure for a 'free generator / game hack' related to Roblox. The primary malicious URL identified is http://netcdn.tw/app/431946152/roblox-images-game-hack, which likely serves as a redirector to a phishing or malware distribution site. The document body also contains text and URLs related to game hacks and generators, reinforcing the social engineering aspect.

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-images-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/how-to-hack-on-roblox-youtube_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/pastebin-com-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-generator-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/download-free-mods-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hacked-roblox-shirt-forums_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-play-for-free-no-sign-up_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-lisa-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-free-codes-generator-no-surveys-no-download_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-easy-robux-cheat_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/redeem-free-robux_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_off00002b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B70 21504 bytes
SHA-256: 434d94d8e7dcdb96a5bba3370530523c05581ce434c318e29d53315ad613df39
font_01_sfnt_off00005a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7D 18748 bytes
SHA-256: bf47317ac3eb75c41d6e114fad8eb749f701cb38c6048cbe79b2f4a9a3dcbfc0

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