Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b9aa205ec7284e…

MALICIOUS

PDF

29.5 KB Created: 2021-07-20 15:54:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dd80fc9b7e4c9eeac0afd862d8d5d777 SHA-1: 09d01c11af6b71373adb449068ba3556eefca2f6 SHA-256: e5b9aa205ec7284e2a22e693f96ec8935c2e0a13afe6ff2bea88961c1799000c
130 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector URL. The document body, though partially garbled, contains text related to 'How To Hack Roblox' and a 'CLICK HERE TO ACCESS ROBUX GENERATOR' call to action, reinforcing the lure. The embedded URL is the primary indicator of compromise, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0556

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.tw/app/431946152/how-to-hack-roblox-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_off00002040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2040 21948 bytes
SHA-256: 549b1ed7a83a9e5c03826adf1aca4cc4e75a5fcb73a4c641007867644287273d
font_01_sfnt_off000050e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50E4 18532 bytes
SHA-256: e43404e6210dd1b6db886e02177179806245dbc9d668ada1920a62956b1e0403

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