Malicious PDF — malware analysis report

Static analysis result for SHA-256 9099493e7b714ee4…

MALICIOUS

PDF

37.1 KB Created: 2021-05-13 01:06:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 83ca01f7a39fd25223ef21ac8ccfda41 SHA-1: e9e811de7e5ba812beb275b0dc2ef93407f9cbb2 SHA-256: 9099493e7b714ee427b7d008cf8f31de21c5d7bfda50bc9ab622ba295b4e5b02
170 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF contains a lure related to obtaining free Robux, which is a common theme in phishing and scam attempts. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document instructs users to interact with the clipboard in a way that suggests command execution. The embedded URL points to a suspicious domain, likely hosting the next stage of the attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/how-you-get-free-robux-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_off0000342f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x342F 25508 bytes
SHA-256: b4273a660f58963cac3e0ac96884fb801cd7b1cc8b7ab75d146d5a5c2777d139
font_01_sfnt_off00006f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1F 18444 bytes
SHA-256: d3aeb47c5138bb2f7afdc1cd1986e008461219f841fd4d3ae6acb877e9db5a0e

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