Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7946b14e9652e86…

MALICIOUS

PDF

45.2 KB Created: 2021-05-16 16:10:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ae3cf14b856a5685a158c9d7e720b582 SHA-1: ac9fe725775e99d40af0056cab64305067df1bf5 SHA-256: b7946b14e9652e866f82c3342d737d915c14ce702db794764a3e48a880491860
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URI pointing to a URL associated with 'free Robux', a common lure for malicious downloads. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to trick the user into downloading a second-stage payload, likely related to game cheating or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/roblox36.com-free-robux-game-hack In PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mahabircreation.com/uploaded_files/userfiles/files/coin-master-hack-blogspot_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
font_00_sfnt_off00004a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A04 24688 bytes
SHA-256: 680960be775fa87888b85629cfbff4d588c18980dce0ab47f4333927b0375cbe
font_01_sfnt_off000082ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CA 2880 bytes
SHA-256: 106de1d187d148d03f5c34a802444a7e62d93662ddf359d17cd55770c6c16081
font_02_sfnt_off00008cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBB 18756 bytes
SHA-256: 75a7293df35b739ae2294dba45007dab7b7658b4df7c6a7e046c10781a1fd260

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