Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5fcbc034412e2d…

MALICIOUS

PDF

24.5 KB Created: 2021-05-21 09:44:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 379f28060a24789d46481832d9684bbc SHA-1: 2cbf336f320b6b623d58ec38bd0b7a3321b7918a SHA-256: 1e5fcbc034412e2d6f44718abd2dba64664ecf2fee1a52330b6b4bd60a2b304d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free Robux generator" that redirects to a known malicious URL. This indicates a phishing or scam attempt designed to trick users into visiting potentially harmful sites. While no scripts were extracted, the embedded URL and the nature of the lure strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0358

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-generator-2021-no-survey-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_off00000f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E 21340 bytes
SHA-256: 1015a44eaac2c2b2f23b7233e72f5a932e5d57053364a56c440747a923524dd7
font_01_sfnt_off00003db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DB3 18436 bytes
SHA-256: 2c2493788bbc5d6ffe5ffa8723841e988493a4c94ecdb3b847386679d5638995

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