PDF static analysis report

Static analysis result for SHA-256 7ecda4d767bf4227…

SUSPICIOUS

PDF

29.1 KB Created: 2021-07-04 19:42:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4ff67b41b55a65d76fdcbf9b3b898466 SHA-1: bb97149b9e60144f2b8b449b388161759dc2cd79 SHA-256: 7ecda4d767bf42278dd30565ff383a8b5928c272062df9bcf3ceb52384aae742
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a 'game hack redirect' lure, directing users to a suspicious URL. The document body also contains text related to 'Spin And Coin Link' and a 'Coin Master Generator', reinforcing the lure. While no scripts were extracted, the presence of a suspicious URL and the nature of the lure suggest an attempt to trick the user into downloading a payload or visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0337

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/spin-and-coin-link-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_001_off00001a29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A29 23892 bytes
SHA-256: 90557673c566dcae19cac6104d038b8af7549b025008a9d2c34a8ef168208026
font_01_sfnt_off000050a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A0 18252 bytes
SHA-256: 28736b5a9916539d9e1831f3abe62990d836adc850f66a331ce26b94ec86a8df

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