Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab4b73dbd95414b1…

MALICIOUS

PDF

36.2 KB Created: 2021-05-15 00:13:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e33fc46b25d3c513052c1c4affa7f36 SHA-1: 27fd52202c87966636169049668fe835997d9d0e SHA-256: ab4b73dbd95414b1ba88eb2a95c3adb399eeacd489046b48de6f73f68e4ceb7e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically luring users with a 'free generator / game hack' for Roblox. The embedded URL, https://netcdn.xyz/app/431946152/claim-roblox-game-hack, is known to be associated with malicious redirector infrastructure. The document body also contains text related to this lure, reinforcing the social engineering aspect.

Machine Learning

  • Nyx PDF Classifier clean score 0.0302

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/claim-roblox-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_off000032b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32B3 24820 bytes
SHA-256: 075de6f7b11b63e1e7d0290d8a86baa1da511c8e691d02a7aa9018a9b241eb48
font_01_sfnt_off00006bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD8 18392 bytes
SHA-256: fe9b7128cb0eee1ae035507d7f39c681ea20029560c6d7ed549175e97334f950