Malicious PDF — malware analysis report

Static analysis result for SHA-256 6240df753a753c14…

MALICIOUS

PDF

35.9 KB Created: 2021-05-14 12:54:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-29
MD5: d7645dbc7c72e0a6e6833251f563c29a SHA-1: aa462100fb31164477fb2f78df42791da209d51a SHA-256: 6240df753a753c1496d8ff2a33898d1bfcc92c18b55db323473ef47e32c06a54
130 Risk Score

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/getrobux-now-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_off000033f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33F4 24244 bytes
SHA-256: adff19cff3c56a2ec1ea329f02de15fdddebc124ca462d49a3c49bb9aa19b153
font_01_sfnt_off00006b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1A 18120 bytes
SHA-256: de6bc5a2c3ccfe8cd092df1e0cd700ba4b2d067c0892dbade0599f643b41633a