Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bca7eabfd7d1859…

MALICIOUS

PDF

36.3 KB Created: 2021-05-22 14:22:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f985a3db965777db9462d573022f937d SHA-1: 2de047f544fe811b97cb9db1dffa455c4b974437 SHA-256: 3bca7eabfd7d1859bcd4feb9980362983b0a0ec7e4a6b08e46874b1f978bd968
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free game hacks and generators. The document body, though partially corrupted, contains similar lures and URLs. The primary malicious activity observed is the redirection to potentially harmful websites, likely to deliver further malware or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/minecraft-windows-10-edition-free-game-hack In PDF document text
    • http://rgadventure.com/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/download-minecraft-bedrock_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
stream_002_off0000352d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x352D 24432 bytes
SHA-256: 045d007dcc092e514378ed59fbea77b652cae9340fa1f2ea6f14a86984e83c8a
font_01_sfnt_off00006ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA2 18524 bytes
SHA-256: 0bf31bed13672a3e0ec3830f17f3a108a804d8b157495bd7936eaddb95c84b8e

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