Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9f6d3936e458db…

MALICIOUS

PDF

36.5 KB Created: 2021-05-25 07:00:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 827a8b465c8be82c8c555f00667a9c6d SHA-1: 66465de24b0cf3e425e9e32b8a2616ab12ff59b0 SHA-256: ca9f6d3936e458dbf69951a5dcb6b7c21b057e03c5a74496989e37bf772c42bc
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack'. The embedded URL leads to a known malicious redirector infrastructure. The document body also contains a call-to-action phrase, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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/ways-to-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
font_00_sfnt_off00002bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEC 29028 bytes
SHA-256: 40a1c017ee9f43711445d60b3b4bf868fe11633131b04e99989365cee6e7193e
font_01_sfnt_off00006c24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C24 18724 bytes
SHA-256: b2cd5ec598a8c260812e966e9710fb38f03066217a6d0ec8f431d8a9dca8af42