Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef6b2b0d8d566e03…

MALICIOUS

PDF

38.2 KB Created: 2021-05-21 09:22:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5bae47f457e9013aa00dbc7a7e2a6cd6 SHA-1: 0ca637c745754608cb8519c615ecc65e0f7ecbec SHA-256: ef6b2b0d8d566e0386e22d58b3d3733d08125d4e3998bf5ddf0c1183c211a1b7
100 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising free Robux. The ML classifier also flagged this PDF as malicious. The presence of a visual download button and the document body content further support a social engineering lure to trick users into clicking the malicious link, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/huskybus.com-free-robux-game-hack In PDF document text
    • http://halitbayramoglu.com.tr/images/tiktok-free-50-followers_GM835599320.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn 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_off00003378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3378 27660 bytes
SHA-256: 12e4081c2d11fb94787af8fb8c77dee68b72b154c62f14c3dfbb944202bd4de4
font_01_sfnt_off0000730a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730A 18688 bytes
SHA-256: 6add98f93d6464e4673e157e466f8eac90a499b9ef5784f234ada041ea0169f0

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