Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef30ea25e5ad7f45…

MALICIOUS

PDF

32.6 KB Created: 2021-07-04 11:34:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8942e93c6b1adceb2ba92404e73e2583 SHA-1: 677ab7ff42d054fb6e1b8f937912b5ddfc8159ad SHA-256: ef30ea25e5ad7f45e327939a71b6a47935ff07a9cd5f77c086eaf7a4b63dd2da
62 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, many of which point to sites offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of these lures suggests the document is designed to trick users into downloading further malware. The document body itself contains obfuscated text and URLs related to these lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/roblox-free-robux-com-game-hack
    • http://103.30.145.97/__statics/gudangsoal/files/roblox-supreme-free_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/robloxs-got-talent-hack_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/wurst-115-2_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/play-roblox-free-online_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-minecraft-hacks_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-coin-master-spins-link-download_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-get-free-roblox-premium_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-hack-apk-33-download_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-spins-coin-master-links-2021_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/download-minecraft-java-edition-free_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-hack-apk-no-survey_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-be-a-free-adim-roblox-2021_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-spins-2021-today_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-rs-roblox-2021_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-free-builders-club-roblox-2021_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/descargar-fly-hack-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_off00002a5d.bin
b625407319e1974825650be5fdc8969cc58dfe6b032c9fcef7b6fc7c58413b34
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5D 21952 bytes
font_01_sfnt_off00005acc.bin
3ade0644b03576c953d7fa07027ec2051297089046835a88cadcb08e5c593426
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACC 19052 bytes