Malicious PDF — malware analysis report

Static analysis result for SHA-256 97cadcec5668bb89…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 09:32:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 630a0a44bf9484eb8d36bcde36851367 SHA-1: a5be9f36e838782a036ca884a5b8971f2b1f9dcd SHA-256: 97cadcec5668bb8901ffcc80769ac40122af9ce4f9e026428b14526ea73f66cc
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple embedded URLs pointing to game-related content, likely as a lure to download further malicious content. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a download button heuristic further supports this. The document's purpose appears to be social engineering to trick users into downloading unwanted files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/free-minecraft-skins-girl-game-hack
    • http://36.94.36.7/elib/repository/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • http://36.94.36.7/elib/repository/minecraft-gun-games-free_GM479516143.pdf
    • http://36.94.36.7/elib//repository/coin-master-ultra-attack-hack_GM406889139.pdf
    • http://36.94.36.7/elib//repository/roblox-skins-boy-free_GM431946152.pdf
    • http://36.94.36.7/elib/repository/links-to-free-spins-on-coin-master_GM406889139.pdf
    • http://36.94.36.7/elib/repository/free-robux-websites-that-actually-work_GM431946152.pdf
    • http://36.94.36.7/elib//repository/free-robux-codes_GM431946152.pdf
    • http://36.94.36.7/elib//repository/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://36.94.36.7/elib/repository/free-pretty-looks-on-roblox_GM431946152.pdf
    • http://36.94.36.7/elib/repository/roblox-script-builder-6-free-codes_GM431946152.pdf
    • http://36.94.36.7/elib/repository/free-roblox-robux-game-passes_GM431946152.pdf
    • http://36.94.36.7/elib/repository/how-to-get-everything-for-free-in-roblox_GM431946152.pdf
    • http://36.94.36.7/elib//repository/free-robux-without-downloading-apps_GM431946152.pdf
    • http://36.94.36.7/elib/repository/roblox-hack-game_GM431946152.pdf
    • http://36.94.36.7/elib/repository/coin-master-50-spin-link_GM406889139.pdf
    • http://36.94.36.7/elib//repository/coin-master-free-link-2021_GM406889139.pdf
    • http://36.94.36.7/elib//repository/hack-coin-master-1_GM406889139.pdf
    • http://36.94.36.7/elib/repository/block-best-robux_GM431946152.pdf
    • http://36.94.36.7/elib/repository/hack-coin-master-2021-pc_GM406889139.pdf
    • http://36.94.36.7/elib//repository/games-like-coin-master-for-free_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003189.bin
8946778488690d0f506499f7529bd8ad900b6bcd62277840e84d12e7420e1390
pdf-font-stream PDF embedded font (sfnt) at offset 0x3189 22588 bytes
font_01_sfnt_off000063e1.bin
b76f3dac7b7b3cf9eeb40e8d40f3dfeb641263e859efa56376b8d43c754683ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x63E1 18100 bytes