Malicious PDF — malware analysis report

Static analysis result for SHA-256 96455a87c8ab427d…

MALICIOUS

PDF

36.6 KB Created: 2021-05-10 21:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8440fe8364f0a0636bed7c57af57e9ba SHA-1: 15af646112fe679b1a300fedd35ce02caf04a653 SHA-256: 96455a87c8ab427d6bb085641422a1619a89d4d93a61653c51f98af8a02e5514
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to 'robloxmatch.com-free-robux-game-hack' which is hosted on known malicious redirector infrastructure. The document body also contains text suggesting a 'Robloxmatch.com Free Robux' generator and a call-to-action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a phishing or scam attempt. The file was authored using wkhtmltopdf, which can be used to generate malicious PDFs.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

Heuristics 3

  • 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/robloxmatch.com-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_off0000338f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x338F 25456 bytes
SHA-256: 52247b8ce73e1fcdc1b1f4cf6c0babeedf0f32579fbc618bb5deb581dd75b026
font_01_sfnt_off00006c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0B 18912 bytes
SHA-256: 2b124103857761273712b4ba35fd952769b133cd88df24246d0abbfc30abcd7b