Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b8e91152ce78ca…

MALICIOUS

PDF

36.0 KB Created: 2021-05-17 07:37:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9d4d165ddc307033eef3cb704ac4b96d SHA-1: 30d5930779116c4d5dce72bde83e7d739d9e3838 SHA-256: 70b8e91152ce78ca358dba2b95073d1bf50d903d73ae1047e6ded2b40d444f6b
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'free Roblox gift card game hack'. The document body, though heavily obfuscated, contains text related to this lure. The presence of these links and the lure strongly suggest a phishing or scam attempt designed to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0243

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/free-roblox-gift-card-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_off00003238.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3238 24512 bytes
SHA-256: dbb2f1d9ea011321716c2be986a1357c756a1209e74ec5956f55e2848fe5d359
font_01_sfnt_off00006a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A79 18572 bytes
SHA-256: d6dd878634c6e0bfa0573f8d07d8c04072d5223543faa3ff40eccc306bc8b9ad

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