Malicious PDF — malware analysis report

Static analysis result for SHA-256 9139779204455f69…

MALICIOUS

PDF

32.0 KB Created: 2021-07-19 14:02:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a650da8c6b43641d05fb0f781f8e54de SHA-1: 34c3afacfa759d2b8f3d6247ff5f0f12b90484af SHA-256: 9139779204455f69c1e443d0afc7980bfb98e73d6eecb13f5aa42da3f0ee23b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising free game-related content like Minecraft generators and skins. The primary lure URL is http://netcdn.tw/app/479516143/free-minecraft-server-game-hack, which is flagged as a malicious redirector. The document body also contains a call-to-action phrase, reinforcing the deceptive nature of the content.

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/free-minecraft-server-game-hack In PDF document text
    • https://amatq.ca/images/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://amatq.ca/images/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://amatq.ca/images/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://amatq.ca/images/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://amatq.ca/images/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://amatq.ca/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://amatq.ca/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://amatq.ca/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://amatq.ca/images/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://amatq.ca/images/how-to-hack-roblox-games_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_off00002bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF5 22120 bytes
SHA-256: 8e8c74290eaeb1174b63e8a0cc598d80a6c07657f5002bdce14481bda8e6496f
font_01_sfnt_off00005cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB7 17684 bytes
SHA-256: 971ebce79d03a5424fa8491ae570b1f65fe2ad06e00737069ab54be99501e2e8

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