Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea56dd559c8789bd…

MALICIOUS

PDF

26.8 KB Created: 2021-06-29 06:54:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f199d9b0d9507313d9545598076eab8c SHA-1: c0c3d0791d2548b4c8525727577c938a2b3eba12 SHA-256: ea56dd559c8789bd7b41f8ca54dc8299c42538572c7ee1e673c6d35794b4bb76
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free Robux generator' and a call-to-action button, directing users to a known malicious redirector URL. This indicates a phishing or scam attempt, likely designed to lead users to a site that either hosts further malicious content or attempts to steal credentials. No scripts were extracted from this sample, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0327

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/free-robux-generator-no-fake-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_off0000164a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164A 21428 bytes
SHA-256: e9d7aae8e94220e4fd8535e3d9ebd9eb6f2cbc3339304d72be6c4393590b492b
font_01_sfnt_off00004506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4506 18992 bytes
SHA-256: 72b672cc8486e0f792382d4c74b578aaab7d167f93544c3d72951f1137b4cb7a

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