Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea2cb55d8eaa54a…

MALICIOUS

PDF

34.2 KB Created: 2021-07-19 02:51:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 196ce06178e576ca045a0c4739b700b7 SHA-1: 99f39774c17b45008a0a8fad8b445c7155067165 SHA-256: 2ea2cb55d8eaa54a662c9b015209c363f35a0f3384499959533006df4484df3c
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link to a known malicious redirector, http://netcdn.tw/app/431946152/robloxmatch.com-free-robux-game-hack, which is disguised as a "free Robux" generator. The document body and embedded links further reinforce this lure, aiming to trick users into visiting malicious sites. While no scripts were directly extracted, the PDF structure and malicious link strongly suggest an attempt to deliver a second-stage payload or lead the user to a phishing or scam page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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 http://netcdn.tw/app/431946152/robloxmatch.com-free-robux-game-hack In PDF document text
    • http://sfera-express.ru/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://sfera-express.ru/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sfera-express.ru/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sfera-express.ru/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://sfera-express.ru/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://sfera-express.ru/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://sfera-express.ru/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://sfera-express.ru/images/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://sfera-express.ru/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://sfera-express.ru/images/minecraft-bedrock-edition-free_GM479516143.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_off00002d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D34 23264 bytes
SHA-256: e92b479b691860e71598464a12e8b3d698fabe1b638e1a17deb2f1f5527f830a
font_01_sfnt_off0000619c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619C 19100 bytes
SHA-256: 320d93f3b8ec418dafe56a0ab761e37d2656ce3fae295c57a773b93fd475c835

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