Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5fba5f81e7513f…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 09:31:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7f872eee4c83188e1a3a8bd575f3ded7 SHA-1: f5fad54bcb4f444127dc05f7a8f49d6c115bbc51 SHA-256: 2d5fba5f81e7513f20f5ded0c5d029ca3b568797bbaacd5a0502939ef70795bd
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a lure related to browser extension installation, suggesting a social engineering attack. The presence of URLs pointing to game hacks and free items, combined with the 'browser install lure' heuristic, indicates an attempt to trick users into downloading potentially malicious software or providing credentials. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/479516143/wurst-game-hack
    • http://111.68.26.74/widyapustaka/repository/free-robux-no-survey-or-human-verification_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-coins-and-spins-coin-master_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/can-you-really-hack-coin-master_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-free-clothes-girl_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/minecraft-pe-free-download_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/wurst-minecraft_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-generator-for-kids_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-haktuts_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-scam-on-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-roblox-svg_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-free-pants_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-spin-coin-master-ios_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-april-fools-hack_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/give-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/minecraft-hacks-for-2b2t_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/is-minecraft-free-on-xbox-one_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/robux-earning-sites_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/daily-coin-master-free-spins_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/earn-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049fd.bin
5bec7a47e0e00ad4e152bca9c3ef008f9d77992d5b0548b65ad875c65d937231
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FD 29452 bytes
font_01_sfnt_off0000875e.bin
c7eba0d35d3482de39ce9cd640884e3a275f5f00d67f8fb5d6d0debc1aa3211b
pdf-font-stream PDF embedded font (sfnt) at offset 0x875E 17556 bytes