Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd328adf6c975d3…

MALICIOUS

PDF

35.4 KB Created: 2021-05-10 10:11:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: dc484ffa9f93be7cc2b2584d0b0dac0e SHA-1: 0e2b91d36272b7498a03778d25d6c30e13f42b1b SHA-256: 9cd328adf6c975d38636828be4c4d818dc8dc6dcc102f708208154dc6c18267d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack lure, linking to known malicious redirector infrastructure. The document body explicitly contains the URL and a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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/how-to-get-roebucks-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
stream_003_off00003070.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3070 24776 bytes
SHA-256: c2733e83a270a7f08201fe51ef3dc2542b461feb465f021a650997c2181b13a6
font_01_sfnt_off0000696b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696B 18080 bytes
SHA-256: 011fab2319da63ee6edfd94b81fcdfa8ad38fc25a0e157c4a4fa77e4e52bce04

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