Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f93293e5a17c0a9…

MALICIOUS

PDF

33.9 KB Created: 2021-07-19 15:55:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 51ceb11920e5c62aad87d721e832fb0d SHA-1: 0c1c580b6ed1fbbd208fabd3145da6822ab7fb70 SHA-256: 5f93293e5a17c0a941aa6386385a6148789e55e0860768832083d22da2942488
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action to access game hacks and free in-game currency, specifically for Coin Master. The primary link directs to 'netcdn.tw', which is flagged as a redirector for game hacks. This indicates a lure to a potentially malicious site, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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-today-gift-reward-game-hack PDF link annotation
    • https://www.imagevideo.info/images/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://www.imagevideo.info/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/robux-free-co_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-install-minecraft-for-free_GM479516143.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_off00002ce5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CE5 23520 bytes
SHA-256: 8a49f8a5f84c0994d3180e52f34e04f46a2c376e1bab60185584bcc265e99793
font_01_sfnt_off00006204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6204 18404 bytes
SHA-256: 20323906fae34ef48fb3028b175607ed26afea8233a7a83525bcd6516f32abbb

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