Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e9271f93e0e3dae…

MALICIOUS

PDF

32.2 KB Created: 2021-07-19 00:48:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2656305c71835e42c9e746adfb69a7ba SHA-1: 756e4ef56711dfaf605ffe94cdec5f5f92b8b82d SHA-256: 0e9271f93e0e3dae753308891140ec15e06fb0ab107b4423febd01ea2215dc7b
82 Risk Score

Malware Insights

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

The PDF document uses a lure related to a popular game, "Minecraft", to entice users to click on a link. This link, http://netcdn.tw/app/479516143/minecraft-login-free-game-hack, redirects to a malicious domain, indicating a phishing or malware distribution attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9496

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-login-free-game-hack PDF link annotation
    • http://sv-nahetal.de/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-mods-for-minecraft-pe_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_off00002906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2906 23288 bytes
SHA-256: 4bdbbd5a2b329d66e20eac4371533c34e0214248496263d04779b7b7ba60e7a7
font_01_sfnt_off00005d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D18 17996 bytes
SHA-256: a07e2ad8fd79bb30e6fc1ebe6b3b8a9b32aa8410594bf0891ac0147b7718a067

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