Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ccc991557e1c7a…

MALICIOUS

PDF

46.2 KB Created: 2021-05-15 00:39:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 45913438dc90b0f757e892b44c506b09 SHA-1: 2e6c9c91c3b94a946acc866f265aac87840efee6 SHA-256: 54ccc991557e1c7ab56ee83b43823fc81be3fb0b721e973e90ea939f504b6142
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free Robux, a virtual currency, and includes an external URI pointing to a suspicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful content. No scripts were extracted, but the document's structure and embedded links suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/free-robux-com-no-verification-game-hack
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/hack-minecraft_GM479516143.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/roblox-report-hacker_GM431946152.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/free-robux-no-apps_GM431946152.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blog_GM406889139.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/free-robux-no-anti-bot-verification_GM431946152.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/show-me-how-to-get-free-robux_GM431946152.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/roblox-free-vip-server_GM431946152.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/coin-master-online-hack-link_GM406889139.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-free_GM406889139.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/coin-master-hack-no-verification_GM406889139.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/download-coin-master-apk-hack_GM406889139.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/prison-life-roblox-hacks_GM431946152.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/free-robux-accounts_GM431946152.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/minecraft-free-download-iphone_GM479516143.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/how-many-villages-are-in-coin-master_GM406889139.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks-without-verification_GM431946152.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/free-minecraft-education-edition_GM479516143.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/free-robux-real-2021_GM431946152.pdf
    • http://elearning.mtsn2lamtim.sch.id/__statics/gudangsoal/files/free-roblox-com_GM431946152.pdf
    • https://www.roblox.co
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c90.bin
7b1d84d29fa32ebdda09ac61b6e361278dda3944cd290e196fb56f87baedd8c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C90 25112 bytes
font_01_sfnt_off0000864c.bin
02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x864C 2912 bytes
font_02_sfnt_off00009049.bin
fd9d837b898dacd9f5ea22edfb03c528ade61200bf0a18b53858ad02fb024854		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9049 18860 bytes

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