Malicious PDF — malware analysis report

Static analysis result for SHA-256 0965ef8fb6c85b0b…

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 11:12:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 591293f37c368f9c66053c611ef54a36 SHA-1: 81d00ca0fc8838ce5431144f46a70018bb4535cf SHA-256: 0965ef8fb6c85b0b36a6398596643b8eef593e8614c09fb564d7c7dc9ce05b5f
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 infrastructure at http://netcdn.tw/app/835599320/free-tiktok-like-game-hack. The document body explicitly mentions 'Free Tiktok Like' and 'CLICK HERE TO ACCESS TIKTOK GENERATOR', indicating a social engineering lure. The presence of embedded URLs and the ML classifier's high confidence score suggest this PDF is designed to redirect users to malicious sites, likely for further exploitation or malware delivery.

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/835599320/free-tiktok-like-game-hack In PDF document text
    • http://www.vista-design.hr/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://www.vista-design.hr/files/roblox-free-robux-generator_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_off00002efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFB 22876 bytes
SHA-256: d02674abdae4d0c9c8f0e53e3f7a5794f77c7025e0e3ed0dc9a56893c90db03f
font_01_sfnt_off00006240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6240 17456 bytes
SHA-256: 2612e5e228ce8c424fcb3a100408051ce9a88b2c89e0201ab469a717737f635a

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