Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cdb435f146ac244…

MALICIOUS

PDF

33.1 KB Created: 2021-07-20 01:02:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c6aa029ee29644d886c8af6e037a2166 SHA-1: 50230877a5aa0fccaf4e0fe69bca319b068f2307 SHA-256: 6cdb435f146ac244711ab712d9765ce6f4dc07e33468f91c297a51fc6b456b32
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a call-to-action button, masquerading as a "Minecraft Name Tag Hacks" generator. The ML classifier strongly flagged this PDF as malicious, indicating it likely attempts to trick the user into downloading a second-stage payload from the provided URLs. The document's content and embedded links suggest a phishing or social engineering attempt to deliver malware.

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/minecraft-name-tag-hacks-game-hack In PDF document text
    • https://jas8.com.tw/image/data/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/minecraft-multiplayer-free_GM479516143.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_off00002e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E45 22324 bytes
SHA-256: bc018e79603437ba429bf0354ee3992e3b88015e5815beee41e1bf125ba2fdf1
font_01_sfnt_off00005f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F74 18288 bytes
SHA-256: eb7ed4260d6d64c3cd9f3242d6af3157cea31df7eff6e4be90ec8e6c005c47d1

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