Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18b34649dae4609…

MALICIOUS

PDF

36.6 KB Created: 2021-05-20 01:31:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5c79459d0ad083a47ff6a5dbec8785e7 SHA-1: 5b418cd013427dedbe4807f43cf1c18a4ddac527 SHA-256: e18b34649dae4609353135209ffaa050409e2d0a892d2e122071c3f1e6b75bcf
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a prominent link disguised as a 'Free Robux Download' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR' lure, which points to known malicious redirector infrastructure. This indicates a social engineering attempt to trick users into visiting a compromised or malicious site, likely to deliver a payload or initiate a phishing campaign. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0623

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-download-game-hack In 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_003_off000030d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30D7 25428 bytes
SHA-256: 7790d6f3e3ceadeb721f56ced37b9f09d11c91ba22e7207b008e9ab857341441
font_01_sfnt_off00006bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFD 18824 bytes
SHA-256: 8406cb1c38774726d91b6a9fb5333918f35ff34bd7dcb56cd5a50b6af28a82ee

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