Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6473c5e8b46c3e…

MALICIOUS

PDF

36.3 KB Created: 2021-05-21 07:04:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 31de65ee195246a34ae51a3840a246a7 SHA-1: 54b55f97fb73739ffd6cf2784621610f0c1e3ea5 SHA-256: 8c6473c5e8b46c3ec1c17c786033a3d2867ee6564413ca88251aed6c5e66e463
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/roblox-free-roblox-game-hack PDF link annotation
    • http://eurosystemssrl.it/images/roblox-a_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_002_off00003110.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3110 26208 bytes
SHA-256: d57b06d0dc1f0d09c21400864e43d3ba29359fdb43113d7a9b46f1560ed94cb8
font_01_sfnt_off00006d8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8C 17948 bytes
SHA-256: 33938510eb20d060112d7682b9c88b880e5c2c8c33e748f0e85f3cc6be6c07ce

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