Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae80e283de39eef…

MALICIOUS

PDF

39.4 KB Created: 2021-05-12 07:05:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1618724634049f10aa34d446a1fc8391 SHA-1: 32a0464e5cd6c7d2240d34a77c17afea3dba92d2 SHA-256: 4ae80e283de39eef759f3d79aef85926d783cd3a6c6b0feffb07815f51a963c8
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically promoting a 'free generator / game hack'. The embedded URL, https://netcdn.xyz/app/431946152/how-to-get-more-robux-for-free-game-hack, is identified as malicious. The document body also contains text and links related to this lure, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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-more-robux-for-free-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_off000031b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31B2 25452 bytes
SHA-256: b017f786c91c91f95f60e39249e1014c3b8d995d52ec44190883ce23294f565e
font_01_sfnt_off00006cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAD 3216 bytes
SHA-256: 985d6f8fda39219df0d7ce68d3e235f8e72eb80b1d711cc28c2d2da8974b5902
font_02_sfnt_off000077d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D2 18480 bytes
SHA-256: 444f48c68388f928a3d871611d0873030738946ead4f6691d00c6869f71b1127

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