Malicious PDF — malware analysis report

Static analysis result for SHA-256 c845d1ca5eecc555…

MALICIOUS

PDF

31.0 KB Created: 2021-07-19 15:50:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a3264f3249e2abc1268d26a674ab0e75 SHA-1: fe2c8de7be01d7f12af87c762481ab7b6500c3b3 SHA-256: c845d1ca5eecc555a359fbbcfeb12b06ec012dc0f22442ceee426cfba2383262
82 Risk Score

Malware Insights

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

The PDF document contains a lure for game hacks, specifically mentioning 'Free Coins And Spins For Coin Master'. It embeds a URL that redirects to a suspicious domain, likely serving as a download or exploit host. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9344

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/free-coins-and-spins-for-coin-master-game-hack PDF link annotation
    • https://www.yatrikathmandusuite.com/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/minecraft-life-hacks_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_off000023d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23D5 23168 bytes
SHA-256: ba5e24d14009ba7fc7523e58f393e690011be5b1f29b6f4b9ccd41e6caf3d2aa
font_01_sfnt_off0000581f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581F 18060 bytes
SHA-256: f1068137021f01f6b5cc3550273fdf5362b49e27ffe305b66dd7920a08d48120

Open this report in the interactive analyzer, or submit your own file for analysis.