Malicious PDF — malware analysis report

Static analysis result for SHA-256 2032f3fc1c875ec5…

MALICIOUS

PDF

32.0 KB Created: 2021-07-19 01:10:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 294d584e64fc5791982877988a1f6a2e SHA-1: e5bf0be8aa226707defc4f44fa6ff0f42f7e7a6a SHA-256: 2032f3fc1c875ec5d6feed02940c0a8dfb84f98c92abbff434558eb5b03af23c
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and infrastructure, specifically advertising 'free Robux' and 'game hacks' to lure victims. The document body and embedded artifacts suggest a social engineering pretext to drive users to these malicious sites, which in turn host further malicious PDFs. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9618

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 http://netcdn.tw/app/431946152/free-robux-website-game-hack In PDF document text
    • http://bgnails.nl/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/free-minecraft-hosting_GM479516143.pdfIn 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
font_00_sfnt_off0000293b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x293B 22140 bytes
SHA-256: df6892d56066aee88187783244c1319cd491fa9263270b385c2e33f1bacba20b
font_01_sfnt_off00005a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A59 18620 bytes
SHA-256: 1505002d6ea1bdfb5df8555ad3fb0955e96c48ae23d69b78f4b624628793cc75

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