Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67264750a80f7cf…

MALICIOUS

PDF

39.0 KB Created: 2021-05-13 19:32:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 21d63b0e7858d75e54ac4f6615754eac SHA-1: 255b4f0a57f3e80d1eac21c0681cd3a15441e806 SHA-256: d67264750a80f7cf0b9e741ab1dad23bedf1deb6e50e85b56d67fb92bc3bd9d7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in 'free Robux' or game hacks. The embedded URL, https://netcdn.xyz/app/431946152/roblox-help-free-robux-game-hack, is identified as a known malicious redirector. The document body also contains text and links related to this lure, reinforcing the phishing attempt.

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/roblox-help-free-robux-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_off000033a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33A5 29696 bytes
SHA-256: 6de517b22cfceca0bdd5b87dc1500c3a03786aea355caed11d38617ff0388548
font_01_sfnt_off00007752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7752 18264 bytes
SHA-256: 4686decc205f725eac2af31d2bb610515d085fb80a4fbb870416018a21b04127