Malicious PDF — malware analysis report

Static analysis result for SHA-256 e581e8802a235392…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 02:11:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 94faee2695c8522187577150af9ddbe6 SHA-1: a418723795ed5810a2169fd1466cd5ad5793f1fc SHA-256: e581e8802a235392c9a06ffa84d2b76957a0aae7283a4caa548192837250030f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'game hack' lure. The document body and extracted URLs reinforce this, showing a clear attempt to trick users into visiting potentially harmful websites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/hacks-for-roblox-prison-life-game-hack In PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/nuevo-hack-de-robux-2021-realmente-funciona_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-pet-simulator-in-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-dinosaur-simulator-hack-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-tiktok-coins-for-free_GM835599320.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-free-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-roblox-with-notepad_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-free-accessories_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_off000032db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32DB 22240 bytes
SHA-256: ffad4929b4d7b7e27edc5740e9e3414dca6eea06eb8f143cc0a12361c3fad146
font_01_sfnt_off0000644f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644F 19092 bytes
SHA-256: ef89b1d271636e764f722043ec5d09a3a98c04342f5f95fe8e2d5526ed958172

Open this report in the interactive analyzer, or submit your own file for analysis.