Malicious PDF — malware analysis report

Static analysis result for SHA-256 6369a8c25407c2d9…

MALICIOUS

PDF

45.3 KB Created: 2021-05-13 12:05:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ef30b379a9ae5cfa1bfec643d80c4b44 SHA-1: e1eeebd6f403fb0d650a2c9a8e12d5e019789311 SHA-256: 6369a8c25407c2d9c492575102e4ce66252267ab4f5a764566bb1aca2709109f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains embedded links that point to known malicious redirector infrastructure, specifically targeting content related to game cheats and free spins. The presence of a visual download button and the ML classifier's high confidence score further indicate malicious intent. The document body, though heavily obfuscated, contains URLs that are also listed as embedded URLs, reinforcing the malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/406889139/coin-master-free-spin-29.12-2021-game-hack In PDF document text
    • http://immo360grad.com/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/roblox-weird_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-strategy_GM406889139.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c03.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C03 24516 bytes
SHA-256: 75ba4112ad99e897c27b08bd71be2ff443086d00f0aceb6b51b16aa86c5da5d4
font_01_sfnt_off000083ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83EF 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDA 18520 bytes
SHA-256: 141dfbbd6ef0260aef384770030821a2da7131f416dfa868053a26d6b11c95c3

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