Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3f0d394ab54cde…

MALICIOUS

PDF

41.2 KB Created: 2021-05-10 16:11:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4ac6f3b7d80512ba2175af168f7f4c69 SHA-1: 19b96a79f7fe2f1e43f3fcfed2d3543e418457dd SHA-256: 8f3f0d394ab54cde65dd0daabe2dfe8ed8ad4a64b93ec9af04eaa896d97135b2
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link to 'robuxglobal.com' which is flagged as a malicious redirector. The document body also contains multiple URLs related to game hacks and virtual currency, suggesting a lure for users interested in such topics. The presence of a 'Click here to download' phrase further supports the malicious intent of directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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/robuxglobal.com-game-hack In PDF document text
    • http://playmoorecello.com/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://playmoorecello.com/images/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://playmoorecello.com/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://playmoorecello.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://playmoorecello.com/images/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://playmoorecello.com/images/coin-master-free-spins-and-coins-hack_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_off00003e5d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3E5D 27648 bytes
SHA-256: 64f9567788b47b3582f8fb64bd6a361bcd27d797ad0888da9e0d0a8ee0a1185b
font_01_sfnt_off00007dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD9 18764 bytes
SHA-256: 59fb30c80e85498b2f7c5a4d05a5dec781d28c8684b6c7c45546c982bbf76575

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