Malicious PDF — malware analysis report

Static analysis result for SHA-256 11b349f4c19bbf9e…

MALICIOUS

PDF

46.3 KB Created: 2021-05-11 08:08:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 73b59ee9c6e186e578f46e418b3c4075 SHA-1: 7241e30130254980b3b760bca6ed1c8cf3b62d78 SHA-256: 11b349f4c19bbf9e2dba92bc53442cf21eb532970e10d2b2e5f5ab5562adaedb
130 Risk Score

Malware Insights

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

The PDF document contains multiple critical heuristic firings indicating it is a malicious redirector lure, specifically referencing a 'free generator / game hack'. The embedded URL, https://netcdn.xyz/app/431946152/i-need-robux-game-hack, is associated with malicious redirector infrastructure. The document body also contains text and a button-like phrase ('CLICK HERE TO ACCESS ROBLOX GENERATOR') reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0116

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/i-need-robux-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000035b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35B0 29972 bytes
SHA-256: b37b50c62a0cea437f4123f765e19965ba6ecdcaedb7b76cc646ba3d801af1da
font_01_sfnt_off00007a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2F 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000083d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D9 6768 bytes
SHA-256: fa93de321190668b294ff46149e4b98ac349b4fd022dcee9ecd964f7f59f3f9a
font_03_sfnt_off00009418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9418 18024 bytes
SHA-256: f1ec7b04fe7efc10da220c54b18b8286c95b0450e2bf9e35db279b0a74518d0c

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