Malicious PDF — malware analysis report

Static analysis result for SHA-256 f92941310d0f37fe…

MALICIOUS

PDF

36.5 KB Created: 2021-05-13 01:05:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 22f7fc91bcad1760dd39256f83950c05 SHA-1: 518ba6e3d31f1d0e8b799c8446a88b5071870ca2 SHA-256: f92941310d0f37fe14997a170d4c279fcc4aaaef8aae8e78acbdc54aafbab211
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for 'Roblox Com Free Robux' and a 'game hack' generator, directing users to a known malicious redirector URL. This indicates a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to exploit user interest in online games to lead them to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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/roblox-com-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_off00003177.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3177 25544 bytes
SHA-256: 48b8fe69fddc59552cb850e65dec2a4dbb56d15af9747bc865ec9cf811ba8eb3
font_01_sfnt_off00006d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2B 18348 bytes
SHA-256: c296ce3e2e2a101d3e2a91d968c24b195b6c9a3a72cf9c6f74fe8dc429b2d5e3

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