Malicious PDF — malware analysis report

Static analysis result for SHA-256 013019d69a8d7b95…

MALICIOUS

PDF

23.9 KB Created: 2021-05-24 05:46:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e0e48dc73ec4e4ff5ea9dc438eed058c SHA-1: 1055403aab34e04be2241b559a3fc7e6fd2a7eef SHA-256: 013019d69a8d7b953b2a718d162d527c3cd19ae4bc4e32a7770f10e241e188d9
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'free robux game hack' and a 'CLICK HERE TO ACCESS ROBLOX GENERATOR' call to action. This indicates a phishing or scam attempt designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0205

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/rbl-gg-free-robux-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_off00000e2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F 21988 bytes
SHA-256: 283e500a3435b6d4666670b7bc14bc73ffacedf90fa8edc394bf2cc20da80063
font_01_sfnt_off00003da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DA3 17608 bytes
SHA-256: c70d7f3a68995cb18597fa9bd379190e3d564b009e8094f0ccde1e22e6ee09cb

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