Malicious PDF — malware analysis report

Static analysis result for SHA-256 06592b997d7f7b39…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 16:33:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d0f1baa74850b121305cc0f0998a9552 SHA-1: e3402a605ae933398ede0ef22d8e5d448f90deee SHA-256: 06592b997d7f7b3997343917e305884cf4fa678f25ea12e022769f33f8dfec75
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.co/app/431946152/roblox-shirt-free-shipping-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/xray-hack_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-cheap-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-and-cards_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
stream_002_off00002fb0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FB0 22508 bytes
SHA-256: 4b6045a5eca6bafa5c46be03a0f4c9c70d729350723e2422c27b97d2571c7491
font_01_sfnt_off000061e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E1 19216 bytes
SHA-256: 3a43c68f45276b1f6b1b8cce5ac7fb53517a776a7430ab4eae65edd07f7c653b

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