Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdaccfe58161ff1b…

MALICIOUS

PDF

36.3 KB Created: 2021-05-13 10:00:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb837413a5b42be2003449f51c1d8a13 SHA-1: 9b20e068f444aa96e148af8bf111eb22ece306d3 SHA-256: cdaccfe58161ff1b8d81ad7c29ed190e16a920c10b2361badaaf2790f4776747
130 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically targeting users with a 'free generator' lure for Roblox. The heuristic firings indicate a critical risk associated with these redirector links. While no scripts were explicitly extracted, the nature of the lure suggests an attempt to download or redirect to a malicious payload, likely involving client-side exploitation.

Machine Learning

  • Nyx PDF Classifier clean score 0.0292

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/www-roblox-com-free-robux-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003197.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3197 24936 bytes
SHA-256: d9cfc37543d4835ba826ac2f335c7ff18cc3a27df8456ca1f1af03c9025e2536
font_01_sfnt_off00006b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B63 18708 bytes
SHA-256: 62c028800c68fb05578d3bf96b402573c397accdba69624e3c020ffc1692f811

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