Malicious PDF — malware analysis report

Static analysis result for SHA-256 c15f0ea54b84d48d…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 19:13:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 71ef1b0b6841971aa65bf630ff6185a0 SHA-1: 9944ac6fde2fe8628075ecae314e114ab8614251 SHA-256: c15f0ea54b84d48d787e8c6d8736ce8da49ea12caeb0863e83f2e139403ecfe0
82 Risk Score

Malware Insights

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

The document presents a lure for free Robux, directing users to download an application from a suspicious URL. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may also instruct users to execute commands, potentially to run the downloaded payload. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.co/app/431946152/free-robux-right-away-game-hack
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-do-i-get-minecraft-for-free_GM479516143.pdf
    • https://www.elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/get-free-followers-on-tiktok_GM835599320.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-real_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-roblox-followers_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-free-wings_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/linkmon-free-robux-website_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-games_GM431946152.pdf
    • https://www.elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/compte-roblox-hacker_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/minecraft-hacks-pc_GM479516143.pdf
    • https://www.elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/can-you-download-minecraft-for-free_GM479516143.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-hacker-tshirts-images_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-roblox-images_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-robux-safe_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-grom-coin-master_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/dbr-roblox-hack_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-hacks_GM479516143.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-gift-card-free-codes_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-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_off000031bb.bin
0ecdb17e9b852b851ac4270c8ce3b54623a7678a5ed68324bf4ad33852a3ac73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31BB 22324 bytes
font_01_sfnt_off0000634a.bin
5d4060ccd281dc246d2bb19d1b67a58dcdbd70f9ca64abcfbf5ecd2d02426e31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x634A 19448 bytes

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