Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c70b35334822fad…

MALICIOUS

PDF

33.8 KB Created: 2021-07-03 13:46:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ee7fbcc858aa64d2a3631078eae62627 SHA-1: 2e4046b92212ddd5aac3df224120e74f3e541f0f SHA-256: 3c70b35334822fadcf16aed265268cfb7657040a8f3a13c23f146317ea9e813c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which are SEO-optimized and point to websites offering game hacks and in-game currency. The ML classifier strongly indicated maliciousness, and the presence of numerous links to potentially deceptive content supports a phishing or scam attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.tw/app/431946152/www-roblox-com-robux-game-hack
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-do-you-hack-roblox_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/bubble-gum-simulator-roblox-hack_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/all-free-things-in-roblox_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-hack_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-spins-on-coin-master-hack_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-hack-tool-for-pc_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-download-hack-ios_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-make-a-free-minecraft-account_GM479516143.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-spins-on-coin-master-iphone_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/blox-supply-free-robux_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-hack-money-driving-simulator-roblox_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/easy-roblox-today-hack_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/hack-coin-master-game-apk_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-hack-a-minecraft-server_GM479516143.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-spins-iphone-2021_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-without-any-verification_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-codes_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dca.bin
70d82be86e17da52ba8d264ab61658c20ca83c5d2d84481797c1730f79a45215		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCA 21964 bytes
font_01_sfnt_off00005e5b.bin
648b9b335c43128e3547428391492330faab3f1ca92414a97b8e95085ba86d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5B 19248 bytes

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