Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f1f4bafb66ec0ef…

MALICIOUS

PDF

36.0 KB Created: 2021-06-26 19:05:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1afe25e9f81ec3ba31be3c810d8460a0 SHA-1: 09a4c6cf157f1c0bfecf1a9edb6a7b6915a1f6be SHA-256: 1f1f4bafb66ec0efcf9417d0b2da8dcff0c811810645cdbd4a81ca5d92449f0a
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and a visual download button lure, directing users to potentially malicious content. The primary URL, http://netcdn.co/app/431946152/how-to-get-free-friendly-smile-for-real-pastebin.com-roblox-game-hack, is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading further malicious content or visiting harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/how-to-get-free-friendly-smile-for-real-pastebin.com-roblox-game-hack In PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/descargar-roblox-hackeado-2021_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-get-50-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/awards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-robux-202100_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/hack-roblox-exploit-2021_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-hack-reddit_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_off000035cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35CD 21760 bytes
SHA-256: 0641211f6b1d34b1292ae2eac8555fcdcb53312ab4921f76f66cf71579c166e6
font_01_sfnt_off0000659b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659B 19872 bytes
SHA-256: 505c92454db9a7fe82eb8ab8b5b8c9146c9cc6d87631d27e47203f81c811acec

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