Malicious PDF — malware analysis report

Static analysis result for SHA-256 40e515b53ac9b2da…

MALICIOUS

PDF

31.5 KB Created: 2021-07-19 03:04:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 24e19183ae574a538aff407d0a5d6502 SHA-1: cb9bd8d8004645432922c7881a7d0ba4d572b818 SHA-256: 40e515b53ac9b2da827a209cba6f334e7b4761a10698a52dab993ba36de05fa2
62 Risk Score

Malware Insights

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

The document presents itself as a guide for making a Minecraft server for free, but contains embedded URLs and a prominent "CLICK HERE TO ACCESS" button that lead to external sites. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple game-related lures suggests a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded URLs indicate an intent to trick the user into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9887

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 http://netcdn.tw/app/479516143/how-to-make-a-minecraft-server-for-free-game-hack
    • https://magistrinfo.ru/images/free-tiktok-bots_GM835599320.pdf
    • https://magistrinfo.ru/images/minecraft-pe-free-ios_GM479516143.pdf
    • https://magistrinfo.ru/images/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • https://magistrinfo.ru/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdf
    • http://magistrinfo.ru/images/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://magistrinfo.ru/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://magistrinfo.ru/images/minecraft-for-free-on-phone_GM479516143.pdf
    • https://magistrinfo.ru/images/robux-com-free_GM431946152.pdf
    • https://magistrinfo.ru/images/how-to-get-free-robux-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000028b9.bin
eef1bf0d3dccda314090903b3ba99530133cdaa1b10bbcf2017b945c7e89baa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28B9 22136 bytes
font_01_sfnt_off00005988.bin
7ebd6cc6f7d73451d43dfe99dc02d56d86c4e3c51693199467050b16fbe82799		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5988 18156 bytes

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