Malicious PDF — malware analysis report

Static analysis result for SHA-256 53c9ea82368b1b22…

MALICIOUS

PDF

38.8 KB Created: 2021-05-11 04:02:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 130d7bc4babe1758d930c78f8c65ef59 SHA-1: 7d9de80d115401b6673da5996b6a5e66603f520b SHA-256: 53c9ea82368b1b22c697832f7752c39f5d62975e083b739347bc1a29c62e7a71
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to a malicious URL. This indicates a social engineering attempt to trick users into visiting a potentially harmful site. The embedded URL is the primary indicator of compromise, likely leading to further malware delivery or phishing.

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/www-roblox-com-robux-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000338c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x338C 29776 bytes
SHA-256: efef2cee5edd634fe5972fb4b14292d1c2ec5537c5df62cb7d469751747fbcdb
font_01_sfnt_off000075b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B7 18548 bytes
SHA-256: b4be1ce4be68d0cff185b6b3f9bf63dfdeebd8cd76f960861369f5a620aef1dc

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