Malicious PDF — malware analysis report

Static analysis result for SHA-256 334058c71a6d0131…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 12:48:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4586ccbc0759b04bbdfe4b2092ba23b1 SHA-1: 2526d4d263f08be644916c042fa8a62b9ca4b980 SHA-256: 334058c71a6d0131e8b9788dc5ce09abfd90db191ae9cd2162c2f6768caf60d0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded links, with a primary URL pointing to a 'coin-master-free-spins-daily-link' lure. This suggests the document is designed to trick users into visiting a website that likely hosts further malicious content or exploits. The ML classifier also strongly indicated maliciousness.

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/406889139/coin-master-free-spins-daily-link-updated-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-robux-simulator_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-link-no-verification-code_GM406889139.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_off000031c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C4 22700 bytes
SHA-256: df5d430eb1e7020eecdb5b4fe58cedca1b90fdbcc36bb8c72d0711272f34a340
font_01_sfnt_off0000649c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649C 19128 bytes
SHA-256: 2140352465974415e356fb4466e0de00f5c4596de6cfd7dfe4c3405bd42c3af0

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