Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8b85cdeb512a0b…

MALICIOUS

PDF

43.1 KB Created: 2021-06-09 05:26:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 99efcf9088699523a7351ad1639688c3 SHA-1: d1b9dc4d3c19cf86d0ae5a10516db7064c19b613 SHA-256: 7c8b85cdeb512a0be511d8b001a0b4dc0cab50b13306ca2fa4f6b195582926a0
82 Risk Score

Malware Insights

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

This PDF document contains multiple embedded URLs and a high-confidence ML classifier score indicating maliciousness. The document body, though partially obfuscated, suggests a lure related to game cheats and hacks, further supported by the 'Password-protected archive handoff' heuristic. The primary attack pattern involves tricking the user into clicking a link to download a potentially malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.tw/app/431946152/hack-cheat-engine-roblox-game-hack
    • http://aks-akk.ac.id/html/perpusakk/repository/roblox-scripting-free-help_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/roblox-cbro-wall-hack_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/free-tix-roblox-hack_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/roblox-robux-generator-best-hack_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/how-to-get-free-robux-copy-and-paste-2021_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/hack-free-robux-no-human-notification_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/greasyfork-free-robux-script_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/free-running-parkour-roblox_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/robux-cheat-org_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/roblox-system32-host-hack_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/arsenal-hack-roblox-pastebin_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/anime-tycoon-hack-roblox_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/how-to-hack-roblox-one-piece-millenieum_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/how-to-hack-into-someones-roblox-account-2021_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/roblox-cheat-engine-lumber-tycoon-2-money-hack_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/free-roblox-account-with-robux-2021_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/hack-roblox-using-command-prompt_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/xbox-roblox-free-john_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/roblox-free-exploit-executor_GM431946152.pdf
    • http://aks-akk.ac.id/html/perpusakk/repository/roblox-rush-com-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004da8.bin
dc8091fffe988c13e8789be274d5d2ecaeff8f5cbd7abc78a4c6be2a7f84c6b9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DA8 23964 bytes
font_01_sfnt_off00008415.bin
b007f850b4c8f5fc31afcd1174b480880e0bcc0700c63cb3f8019ba68062e40a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8415 18860 bytes

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