Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff14d922f042f647…

MALICIOUS

PDF

35.6 KB Created: 2021-05-24 01:43:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4adad9ee3388d20f5336af7de938cf06 SHA-1: 9acfce61bcd9a15850aeff33efb80ba8fb47a204 SHA-256: ff14d922f042f647520bda808e2f5052e00c16ddc8fc5db66bfea198bb06cf94
82 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to websites offering game hacks and generators, such as 'coin-master-daily-free-spin-app-game-hack'. The presence of a 'CLICK HERE TO ACCESS COIN MASTER GENERATOR' call-to-action further supports this lure. These links likely lead to the download of a secondary malicious payload, as indicated by the high-confidence heuristic firings and the overall malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-daily-free-spin-app-game-hack PDF link annotation
    • http://bob-reid-music.com/uploads/files/files/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://bob-reid-music.com/uploads/files/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://bob-reid-music.com/uploads/files/files/free-robux-working_GM431946152.pdfIn PDF document text
    • http://bob-reid-music.com/uploads/files/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://bob-reid-music.com/uploads/files/files/tiktok-free-quotes_GM835599320.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
stream_002_off0000326c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x326C 24264 bytes
SHA-256: 1304ef33e347574f3d71a8ce2399285bdedf7f830318153951aa676bdf03f5b5
font_01_sfnt_off000069b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B8 18308 bytes
SHA-256: f9a3a46f76b0cae8a4d9bd0baf07f2a5aefd3f4554b846be65e0119e8f17791d

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