Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b854dd718529f53…

MALICIOUS

PDF

35.6 KB Created: 2021-05-13 12:31:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b94f01da2bea55e891e726f7d811dc4 SHA-1: de93082d834fd015eee5cc78f051e5e94125c14a SHA-256: 0b854dd718529f533b3f6d5f5adc8bed71bd6a4e7954c749ae68d573bf0dd852
130 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a lure for a "free generator / game hack" and links to known malicious redirector infrastructure. The embedded URL, https://netcdn.xyz/app/431946152/code-free-robux-game-hack, is the primary indicator of malicious intent. While no scripts were explicitly extracted, the nature of the lure and the redirector suggest a potential for further exploitation or payload delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

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/code-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_off00002f24.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F24 25352 bytes
SHA-256: 1f8ef65c8007589ac82d98fa3614f4ac9dd061420977bb300c523f60fe151bb1
font_01_sfnt_off00006a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1F 18188 bytes
SHA-256: 00280273b0975bee0187bf1a1cc0e29ac13cf800f2976c84d5f4ba53341fee41

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