Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0a80eac1500cd1…

MALICIOUS

PDF

35.8 KB Created: 2021-05-24 19:22:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 43535fcce8a5f80c9f1526e260e15419 SHA-1: 9a1ba17971719de05749f2af7de6882ee150fb0c SHA-256: df0a80eac1500cd102bd0955f63fcaf5a9f389637dfee46ebdda9b9ee81e64a4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a game hack lure, specifically mentioning 'free Minecraft PE server game hack'. The document body also contains similar lures and multiple URLs pointing to sites offering free spins, game hacks, or robux. These links likely lead to a malicious website designed to trick users into downloading malware or providing sensitive information.

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/479516143/free-minecraft-pe-server-game-hack PDF link annotation
    • http://zercalo.org/images/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/can-i-get-robux-for-free_GM431946152.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_off000033ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33EA 24616 bytes
SHA-256: 743f7de12575b2e09b3639ed3c43a1f66ba2b109be6bde7bb1a374532291e89b
font_01_sfnt_off00006bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDE 17836 bytes
SHA-256: 40ba9e4e6a96b9fbdb66fe1c3cdc29181d81f4b56a4eeac74a5dcf6bc0460396

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