Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f225afd93c385f0…

MALICIOUS

PDF

37.3 KB Created: 2021-05-19 06:30:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: daddfc5d2c189e2ad940626fedba5405 SHA-1: 9336ea94e6a974de3c0505c47ac981126a596901 SHA-256: 3f225afd93c385f00108b3302f6d0ef49b145e5cf01b8d959b72c2d77712be17
130 Risk Score

Malware Insights

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

The PDF contains multiple links to a known malicious redirector infrastructure, disguised as a game hack generator. The document body explicitly mentions "How To Get Free Robux Hack 2021" and includes a "CLICK HERE TO ACCESS ROBLOX GENERATOR" call to action. This strongly suggests a social engineering lure to trick users into visiting the malicious URL, which likely leads to malware download or phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/how-to-get-free-robux-hack-2021-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_off00003465.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3465 25980 bytes
SHA-256: 748158cd393730d6ebd2fa6ed497668c9de435e32142ef4bdfd95e8a8d60a010
font_01_sfnt_off00006dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD7 19084 bytes
SHA-256: bf126c80224e4ece1a877f3c45a4e2f725662c205f8b78a709aa4c80730d283c

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