Malicious PDF — malware analysis report

Static analysis result for SHA-256 211748a09a9571ba…

MALICIOUS

PDF

40.1 KB Created: 2021-05-12 18:00:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 62f2b88396d7e470b8a86e8e983f3b3f SHA-1: 797d3545e06c55ca52072cc161343b35cab8be43 SHA-256: 211748a09a9571baf022147e846b255d6490a97779b244f61b5cbe45139fb13d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'Robux Free Online' and a prominent 'CLICK HERE TO ACCESS ROBLOX GENERATOR' call to action, which is a common tactic for scams. It embeds a link to a known malicious redirector, https://netcdn.xyz/app/431946152/robux-free-online-game-hack, which is highly suspicious. The PDF structure and embedded content suggest an attempt to exploit user interest in online games to deliver a malicious payload or redirect to a fraudulent site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/robux-free-online-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000033a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33A6 25464 bytes
SHA-256: 20e4e5b0dec905613cc9ddcf6df4430cdd287f7675dc94c67dede48ede42410e
font_01_sfnt_off00006f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0B 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00007bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB3 18208 bytes
SHA-256: 9c6e6aa5efa9903ee4d2fc70532f13b8880c04837d913a4df075592e4b137fb6

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