Malicious PDF — malware analysis report

Static analysis result for SHA-256 1992d7ee0442ff5a…

MALICIOUS

PDF

38.5 KB Created: 2021-05-14 05:30:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 92fdd9eca90e7e2a9b7702fa18b07c75 SHA-1: a991d14a61998650b02a6b7c2244986a0d048535 SHA-256: 1992d7ee0442ff5a886898173295c56e9134fa19fea4447caee51c51a85df351
130 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'free generator / game hack' which redirects to malicious infrastructure. The embedded URL https://netcdn.xyz/app/431946152/how-to-get-robux-for-free-2021-game-hack is flagged as a known malicious redirector. The document body also contains text and a call-to-action button, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/how-to-get-robux-for-free-2021-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_off0000328d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x328D 28560 bytes
SHA-256: 2f52a2efe20bd0bb9ca82af42a402e3a355757d2219bdfb80d04b0761919fa85
font_01_sfnt_off000073e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E7 18684 bytes
SHA-256: 65f445f0396e54760dd2a1edc1744209422bc48f29c35ea74a9bcb72e79f8b06