Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6bf7b655a2a5917…

MALICIOUS

PDF

42.7 KB Created: 2021-05-11 22:05:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9526fcc76eebf5b002da715159003344 SHA-1: 7eef3b159dca932fd5bd439c21a164fbf0890627 SHA-256: f6bf7b655a2a591799f2dfd77fe2564585e059740cbd17d1be008c98101f7221
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to external URLs, identified as malicious redirectors. The document body, though partially corrupted, suggests a lure related to game hacking applications. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/hack-coin-master-apk-3.2-game-hack In PDF document text
    • https://marcopolosydney.com.au/images/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/cone-master_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-and-spin_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-spin-link_GM406889139.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://marcopolosydney.com.au/images/coin-master-hack-android-2021_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
stream_003_off00004aa5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA5 25696 bytes
SHA-256: b3cf7c8d9aef55c5342a00ea566b50a359c2937f1674716f52ba8719da7ed887
font_01_sfnt_off000084a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A6 18256 bytes
SHA-256: 2de3a067c92fd750cac538864d09afc8d4d9cd3de69932c6374fba6ea057edab

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