Malicious PDF — malware analysis report

Static analysis result for SHA-256 58beb0c927327bb8…

MALICIOUS

PDF

35.7 KB Created: 2021-05-10 11:12:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 43e30fd96aa35c31bc6966175a36c147 SHA-1: 99180f68371df50e3e66b95e38e218a8a91ba2d6 SHA-256: 58beb0c927327bb847d92994e3eb1d47bf0644a0bb58f6ad8570a7c3b1372cbb
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'free generator / game hack' lure. The embedded URL, https://netcdn.xyz/app/431946152/free-promo-codes-for-robux-game-hack, is associated with known malicious infrastructure. The document body, though partially corrupted, contains text related to 'Free Promo Codes For Robux' and a call to action, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier clean score 0.0282

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/free-promo-codes-for-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_off00003412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3412 23512 bytes
SHA-256: df5c2a9b5a7c1a665bbb68899bef12ffd4d031b9f77339c29a299540fb9eb208
font_01_sfnt_off00006943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6943 18604 bytes
SHA-256: f71c03fba91376071fb946d88a6d16afcc2c6d61aa4ef632c3571b6200829f5d