Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc1c13b32eb1310…

MALICIOUS

PDF

36.7 KB Created: 2021-06-13 23:22:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 65f85a16d1d4dfeddf8b24fe0c03836c SHA-1: d5b4d5f1ff10347b276e0bf542721df2419143f5 SHA-256: ecc1c13b32eb13105e13d9fc6d14a2b351fb9b1bd8e6324d87278477dd527a23
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a "free generator / game hack" which links to a known malicious redirector. The embedded URL, http://netcdn.co/app/431946152/how-to-get-free-robux-2021-game-hack, is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit user interest in game-related cheats to redirect them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0292

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 http://netcdn.co/app/431946152/how-to-get-free-robux-2021-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_off00002f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F54 26440 bytes
SHA-256: 62b1defb4d50be1be47206b148e399121c6c3f6fc70de2c7076fc318832507c2
font_01_sfnt_off00006c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C90 18684 bytes
SHA-256: 662354714a7c4aa127b8bd681013e9d5d113fbfc5a2f5afb2d34764175bb04a5

Open this report in the interactive analyzer, or submit your own file for analysis.