Malicious PDF — malware analysis report

Static analysis result for SHA-256 50cb34899bd630c8…

MALICIOUS

PDF

41.0 KB Created: 2021-05-13 08:39:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d1f2c55cfc1c904164b20011915d3b81 SHA-1: 6347e7acac2e8f7a5addddba4fed59a44885c949 SHA-256: 50cb34899bd630c8d9d001150ea42eb9a5bc04bb5efbe9c1426a5bd3a1f3d5a3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free coin master gold cards game hack' and embeds multiple URLs pointing to similar game-related hacks. The ML classifier strongly flagged this PDF as malicious, and the heuristic rules indicate it's a game hack redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites, likely for malware distribution or phishing.

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/406889139/free-coin-master-gold-cards-game-hack PDF link annotation
    • http://schmittmusik.de/images/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/robux-miner_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/static-moonactive_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-free-robux-hack_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_off000047ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47FF 24192 bytes
SHA-256: 6f3874bb21ccb69a7615f5bd39a621af7ea31341d485be15c1260a7e1bbaa1f2
font_01_sfnt_off00007edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDF 17960 bytes
SHA-256: 8682528a83dd112d81181b55b0947f4d42ad7746a23a86464d464a09275f8c19

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