Malicious PDF — malware analysis report

Static analysis result for SHA-256 b39e7d0fd66fd5fe…

MALICIOUS

PDF

33.3 KB Created: 2021-07-20 07:21:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6ac98f39b4b426af73778dd4c7a29df9 SHA-1: 9f53a1bdf0bd4e2a0b91c80ba4f9e9aded3eadb4 SHA-256: b39e7d0fd66fd5fe35225348aaa8d06e4be9696a94e56161b5522efd2e549053
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/479516143/minecraft-windows-10-hacks-game-hack. The document body and embedded links suggest a lure for game-related cheats or hacks, which is a common social engineering tactic. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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-windows-10-hacks-game-hack In PDF document text
    • https://magistrinfo.ru/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-robux-script_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://magistrinfo.ru/images/coin-master-free-spins-link-blogspot-2021_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
font_00_sfnt_off00002c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C41 22760 bytes
SHA-256: 4da7e6de6193311f7f57339423612dba24288c77a75615265c80207aa27834b5
font_01_sfnt_off00005f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0B 18696 bytes
SHA-256: 14f86b407040f424958936cb2b2b49b26067a8980bd50a77917f0563cc1bff87

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