Malicious PDF — malware analysis report

Static analysis result for SHA-256 3093d9db34e4e4c3…

MALICIOUS

PDF

45.4 KB Created: 2021-05-17 05:31:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 99aa4afe78940911405798eabbb9e883 SHA-1: e0273f3d57436972652ba4cdea8bcbbab1e465f1 SHA-256: 3093d9db34e4e4c3b7411989564a5c23f561d6f5294df4323d7de774330819d8
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to a known malicious redirector infrastructure, specifically advertising a "free Robux generator" or "game hack". The document body and heuristics confirm the presence of these lures, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the nature of the embedded links suggests a potential for further malicious activity upon user interaction.

Machine Learning

  • Nyx PDF Classifier clean score 0.0146

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-robux-real-working-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003245.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3245 28256 bytes
SHA-256: 78b76efcfb9164467f62ba8b95066ff63e6f0b2ce1a9b305926515eb4f09c6c1
font_01_sfnt_off000072ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EC 8132 bytes
SHA-256: e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
font_02_sfnt_off00008dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD9 19092 bytes
SHA-256: e9cbc94ede6f039b2d64cc554d217f5f9744837c58519873c9f71b22e801d63e

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