Malicious PDF — malware analysis report

Static analysis result for SHA-256 5652b75f1c3c8db3…

MALICIOUS

PDF

44.5 KB Created: 2021-05-22 07:04:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6391b48e17928989d904bfe865363053 SHA-1: c7dc005425d20e880fa97a25d86979614198fe3e SHA-256: 5652b75f1c3c8db33433426901b3b52cdeacf72779cf9152d149a8474193b6bb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a heuristic firing indicating it's a 'free generator / game hack' redirector lure. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-game-hack, is likely the destination for the malicious payload. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering tactic to drive users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7947

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-game-hack PDF link annotation
    • http://hk-kan.org/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000036ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36ED 25324 bytes
SHA-256: ae15c73e5c6baf675d9e87c4df1a45ea295943fd9c783b45bdab9d73ea0d6f74
font_01_sfnt_off000071b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B8 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9E 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_03_sfnt_off00008db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB6 17884 bytes
SHA-256: 7b855ef2bb944b5b370c61480927ccad63ff31bdbf820bc1f0da9d35a10f5fb2

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