Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf6c590eb5c009a9…

MALICIOUS

PDF

48.7 KB Created: 2021-05-15 01:00:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1a4a5d86412894af57db486942e5b938 SHA-1: 397b1dc4a5ec2213282b7f29c5dc7c75bc5e7c0b SHA-256: cf6c590eb5c009a96a5f3f6ce876b61693116c6bd759a6b666170ddede84ea93
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URIs and a clickable link pointing to external resources, disguised as offers for in-game currency. The ML classifier strongly indicates maliciousness. The document's content and linked URLs suggest a phishing or malware distribution attempt, likely serving as a lure for further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 https://netcdn.xyz/app/431946152/free-robux-instantly-game-hack
    • http://110.232.82.59/__statics/gudangsoal/files/2021-free-spins-coin-master-link_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/daily-coin-master-free_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/roblox-games-with-free-boombox_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/is-roblox-hacked_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/robux-offers_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/coin-master-hack-spin-generator_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/robux-free-c_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/how-to-hack-coin-master-android_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/roblox-getting-hacked_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/minecraft-114-download_GM479516143.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/coin-master-free-spins-haktuts_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/how-to-get-free-robux-fast_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/www-coin-master-hack-xyz_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/how-to-send-free-spins-on-coin-master_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/how-to-get-free-robux-easy-hack_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a9e.bin
36c2ff7b71cdc6f6f3a7d2274eb6b0af37461d249e8bcabc4ad7ca9375a66b1c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9E 36452 bytes
font_01_sfnt_off00009b81.bin
eeb00711cf2e5591db958639ea5d908a8ba1b5c4404aa75c69e8a5349c023cb9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B81 18600 bytes