Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8806c137a356874…

MALICIOUS

PDF

41.5 KB Created: 2021-05-17 19:32:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 64b1cfd0b8b3d4c65110643005ff72df SHA-1: 3b8d47c28d837a3c90240e5a1b14bd167c819504 SHA-256: f8806c137a3568743c2146d6d1b0e0f0f7ef4b4a07f661a1e418843292c46772
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically disguised as a 'free generator / game hack'. The document body and embedded URL confirm this lure, directing users to 'https://netcdn.xyz/app/431946152/roblox-robux-hack-generator-game-hack'. This indicates a phishing attempt to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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-robux-hack-generator-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A6 29244 bytes
SHA-256: 30455af0a80c339a2b7d7318a2c104ea0721bea9d6ff6939f15c173055003a7a
font_01_sfnt_off000075b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B4 3016 bytes
SHA-256: 4c3e2db5174821787a4569c9da4979555510caebd15fb9cea35573c139e242bd
font_02_sfnt_off00008017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8017 18428 bytes
SHA-256: bdac85b283ea9edec09d9f64e9cfc1f18bf7d6a92d05f58e23f3db2f02fbf028

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