PDF static analysis report

Static analysis result for SHA-256 a4e92b31f649410d…

SUSPICIOUS

PDF

34.8 KB Created: 2021-05-16 01:30:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a0fe25347f1c3230d73e72c3d8095b4d SHA-1: dd459882193b9e90642a519e9b7f8d498d79b97b SHA-256: a4e92b31f649410d107d025725796a33ffeb15213b8aa43ce3197961f4f796d9
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack generator, a common lure for scams. The document body and embedded URLs reinforce this, pointing to a URL associated with 'free spins' and 'game hack'. While no scripts were directly extracted, the PDF structure itself facilitates linking to external resources, which could be used to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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/how-to-get-free-spins-in-coin-master-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003012.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3012 24284 bytes
SHA-256: dd2678e217029b8d65d24ef8be5b15fa34960638e8281eea0129b17944ef498e
font_01_sfnt_off00006733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6733 18052 bytes
SHA-256: 52b27d49d658c5dd219fe1685a79a71966a386845fdc62a41335e5719e4d5001