Malicious PDF — malware analysis report

Static analysis result for SHA-256 8129c01c80473d9e…

MALICIOUS

PDF

27.5 KB Created: 2021-05-11 06:02:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d73a6ad23d77e9c399a0ae2483a71125 SHA-1: b6fef938e63f0cf5c3fca7aa51671f50525eb764 SHA-256: 8129c01c80473d9e792cc590abea47b067bd2540d9d61415b29a2b8391fa94d2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures for game hacks and free generators. The primary IOC is a URL that has been identified as part of malicious redirector infrastructure. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0328

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/who-to-get-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
font_00_sfnt_off000018cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CB 22640 bytes
SHA-256: fa205060e5c03ce210edb8ab2bb85e88f91426d1800b5e79999a71294854ea85
font_01_sfnt_off00004b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B6B 17712 bytes
SHA-256: a155e374f306412de18b198b33a2fbfcf80755b097773591183598013d532189