Malicious PDF — malware analysis report

Static analysis result for SHA-256 53389d0d7f075afd…

MALICIOUS

PDF

33.1 KB Created: 2021-07-19 02:28:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6ebfb1015cab371ceb1473bf2fd6eb4b SHA-1: 535ef45e5897879a9acdc8242209809d89e5d1d9 SHA-256: 53389d0d7f075afd9587a71911e783b12890f9342bf9c336be732b73cf1e7407
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, directing users to external websites that promise game hacks and free items. The primary lure, 'Coin Master Free Spins And Coins Daily', is associated with the URL http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-daily-game-hack, which is a common tactic for phishing or malware distribution. No scripts were extracted, but the document structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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/406889139/coin-master-free-spins-and-coins-daily-game-hack PDF link annotation
    • http://www.taxiaparis.fr/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-robux_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002b80.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B80 23000 bytes
SHA-256: d421f0fc41f38510c74961572abc1498c8805c0784f69f5dbc301d8c72b33108
font_01_sfnt_off00005eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFF 18480 bytes
SHA-256: e9052e0f9c593188345ba389179451ef12c6c6a401d56a628cce0964dfd3917c

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