Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f92d7bbefaeef19…

MALICIOUS

PDF

42.8 KB Created: 2021-05-15 10:09:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a59f4d37c30efef4abe83fbfd23d1cba SHA-1: 83a823fedf0ede9fcd6aa214545394f5d8c8bfb9 SHA-256: 2f92d7bbefaeef19608b2790b5189802538986c27cf6a59f5ab8c47b10f16ace
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a call-to-action phrase, strongly suggesting a phishing or social engineering attempt. The primary URL, 'https://netcdn.xyz/app/431946152/earn-robux-now-game-hack', appears to be a lure for game-related cheats or currency. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the presence of external URIs and the document's content indicate an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/earn-robux-now-game-hack
    • https://www.gotsolution.se/uploaded_files/userfiles/files/easy-robux-today-com_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/can-i-get-minecraft-for-free_GM479516143.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-roblox-clothes-templates_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/coin-master-free-spins_GM406889139.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/what-is-wurst_GM479516143.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/minecraft-bedrock-download-pc-free_GM479516143.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-400-spins-coin-master_GM406889139.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/coin-master-free-coins_GM406889139.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-minecraft-java-account_GM479516143.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/202100-free-spins-coin-master_GM406889139.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-robux-sites-2021_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e34.bin
8a635ea4cc6567b668ef797fccaaa9eb9573d4bf8fde1472b0fa35e2d0741170		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E34 24060 bytes
font_01_sfnt_off000084ec.bin
c4f4d96dd4ae320374aba47736520dcd557f712ab2f623cefa09a16c6934ef42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84EC 18244 bytes

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