Malicious PDF — malware analysis report

Static analysis result for SHA-256 6583f04afb0e8139…

MALICIOUS

PDF

31.8 KB Created: 2021-07-22 10:01:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c17ec751503bc7a37d36c362a9e432e SHA-1: 38f0211d4b57155abdcf26944916b6f9dccf9632 SHA-256: 6583f04afb0e8139f5b25915058577b53765c0bbac203ed56316adb97bb6b7f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on http://netcdn.tw/app/479516143/create-minecraft-server-free-game-hack, which is likely a lure for downloading a malicious application. The ML classifier strongly flagged this PDF as malicious, and the presence of download-related text further supports a phishing or malware distribution attempt. No scripts were extracted, but the embedded links are sufficient indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/479516143/create-minecraft-server-free-game-hack In PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-100-robux_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-robux-games-that-actually-work-2021_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_off00002a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A87 22444 bytes
SHA-256: 6230439c17d9ae5b572946945aacadcaedc36d1d738e8d1955777e2160f7725f
font_01_sfnt_off00005c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C17 17684 bytes
SHA-256: 739dfd09c5bedc98bb46a6c5718dfc06afa6391c84dc1b066bb71172f329b46c