Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc92757820ce8ae3…

MALICIOUS

PDF

37.5 KB Created: 2021-05-14 03:02:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 62a914b2bc344aa27ca5b8c99ea9f3c5 SHA-1: 1ef11bee75e0235321335ecfa8831cae5ee43a18 SHA-256: cc92757820ce8ae33dfe7d441a18f64784803c9add9f2c1f9783e5a88b126631
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically advertising a "free Robux hack". The document body also contains similar lures and a call-to-action phrase. The primary malicious link identified is https://netcdn.xyz/app/431946152/free-robux-hack-no-verification-game-hack, which is associated with redirector activity.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-robux-hack-no-verification-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_off00003203.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3203 27428 bytes
SHA-256: 94b362900b6b8ac299fb76ea0bce63326f0cb576466cd567b587a7d517439e24
font_01_sfnt_off00006fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB2 18772 bytes
SHA-256: 87cd01898e0c435f6b8e3fdf3db31fb3453f40f32176463e71dafc861d9bd3f7