Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0967dcf8da52c6f…

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 21:41:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0770dca3ee63df0ca1d69bb7a1c8b94d SHA-1: b9422ede695ce54c35cf213f32018a3dd7e90601 SHA-256: c0967dcf8da52c6f62af4a3277c085f10f61c04cb42c7c5bb33bcd25d73f2b31
82 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one to 'roblox-install-free-game-hack', which is a common lure for users seeking cheats or generators. The ML classifier also flagged this PDF as malicious. The document's purpose appears to be directing users to potentially malicious websites that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-install-free-game-hack PDF link annotation
    • http://www.evaplast.by/images/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/robux-xyz_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://www.evaplast.by/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.evaplast.by/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/spin-link_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/roblox-com-www_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
stream_003_off000046d4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46D4 24752 bytes
SHA-256: 2975d09cfa4fd1e099c95fd51800a6b17bcf9f5664ce5319130df50d86340220
font_01_sfnt_off0000804e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x804E 18280 bytes
SHA-256: 3c3a3b9ea50be1288d4e90d28d6823d5d0e7fce454efe1523ba787caa6fa0fc3

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