Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c52fb0f68458ac…

MALICIOUS

PDF

35.7 KB Created: 2021-05-23 04:45:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 50cb4f8cac418204ce5a9fda36fa1236 SHA-1: 6db452e4a2a73d835ac0caa670e9d6225a728bf0 SHA-256: 42c52fb0f68458ac3ab94d9be85d7c98f4ef3c1961fa295096f75829ac0d6a0e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacking, specifically for Roblox, and embeds a link that redirects to known malicious infrastructure. The document body also contains a call-to-action phrase, 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the deceptive nature of the content. The embedded URL is the primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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-hack-roblox-accounts-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_off00002c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C85 25956 bytes
SHA-256: 2648ce9044d9a79aac6defe71a0d3f46ef82a0d400e5dc1f9ee8d12054ee56af
font_01_sfnt_off0000694f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694F 18588 bytes
SHA-256: 7bfa318362f39458d7d6cfaed4b7fb6212c616d22e88bbb7e9e73b07c323fe95

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