Malicious PDF — malware analysis report

Static analysis result for SHA-256 098c6f5f472a3bb7…

MALICIOUS

PDF

42.5 KB Created: 2021-05-17 04:30:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 69021d61b9a0f1011b12c274090d2728 SHA-1: 5d10436eab7c1e8d88dccc64b17f68dd9e6c6cb4 SHA-256: 098c6f5f472a3bb7bbed23b505521eb32c8676a2d3bf81f4713045530cbbaeb2
130 Risk Score

Malware Insights

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

The PDF contains multiple links and a call-to-action phrase designed to trick users into clicking a URL that leads to known malicious redirector infrastructure. The document body and metadata suggest a lure for 'free Robux' or 'game hacks', a common social engineering tactic. The embedded URL is the primary indicator of malicious intent, likely leading to a further stage of compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.0344

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-robux-generator-no-human-verification-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_off00003151.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3151 36988 bytes
SHA-256: e936710a3188a78bfb2077a0fedc51797f09952f1efe1d24548ef568326470a9
font_01_sfnt_off00008374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8374 18860 bytes
SHA-256: f1337887e63f46ec65b145f76804780e669468724c6330ac6fa0452b843b30d3

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