Malicious PDF — malware analysis report

Static analysis result for SHA-256 88fa1dc308007a07…

MALICIOUS

PDF

38.5 KB Created: 2021-05-17 20:50:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e357e184c61e02f9ab4ef1d6821c564f SHA-1: 3ecaff9d92d1bcae476a255e357b6b1669c0b25a SHA-256: 88fa1dc308007a071364de129af175e886009dd99e66d690851c103ba9284026
110 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link disguised as a fake CAPTCHA or human verification prompt, aiming to lure users into clicking it. The document body and embedded artifacts suggest a lure related to 'Robuxglobal.com' and a 'Roblox Generator', further reinforcing the social engineering aspect. The primary malicious URL identified is https://netcdn.xyz/app/431946152/robuxglobal.com-game-hack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 4

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/robuxglobal.com-game-hack In PDF document text
    • https://www.roblox.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000033bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33BD 27968 bytes
SHA-256: 8729d8f2f2e9f667ac8b43ad01e5b7d8263fe08f943cea90632c76b69e148985
font_01_sfnt_off00007400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7400 18764 bytes
SHA-256: 59fb30c80e85498b2f7c5a4d05a5dec781d28c8684b6c7c45546c982bbf76575

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