Malicious PDF — malware analysis report

Static analysis result for SHA-256 65de8b3e830f6a85…

MALICIOUS

PDF

41.5 KB Created: 2021-05-17 13:15:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 98905091a0f2ac4e97c4975d40453cec SHA-1: db1c67780d481ea9adc7a5246375819d6a395b08 SHA-256: 65de8b3e830f6a85a5cc323f72ad8e98a4039dd9eaad9ab23b2d4f423bf1b5ba
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are part of a link farm related to game hacking and cheats. The ML classifier strongly indicates maliciousness, and the presence of a call-to-action button further supports a malicious intent to redirect users to potentially harmful content. The document's structure and content suggest it is designed to exploit user interest in game exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-hack-minecraft-pe-game-hack
    • http://pisanie-nut.pl/images/free-spin-sites-for-coin-master_GM406889139.pdf
    • http://pisanie-nut.pl/images/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdf
    • http://pisanie-nut.pl/images/coin-master-hack-tool-without-verification_GM406889139.pdf
    • http://pisanie-nut.pl/images/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdf
    • http://pisanie-nut.pl/images/how-to-make-clothes-on-roblox-for-free_GM431946152.pdf
    • http://pisanie-nut.pl/images/robuxmatchcom-free-robux_GM431946152.pdf
    • http://pisanie-nut.pl/images/free-roblox-accounts-generator_GM431946152.pdf
    • http://pisanie-nut.pl/images/roblox-games-with-free-radio_GM431946152.pdf
    • http://pisanie-nut.pl/images/robux-rewards_GM431946152.pdf
    • http://pisanie-nut.pl/images/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • http://pisanie-nut.pl/images/install-coin-master_GM406889139.pdf
    • http://pisanie-nut.pl/images/coin-master-free-spins-heaven_GM406889139.pdf
    • http://pisanie-nut.pl/images/hack-coin-master-ios-download_GM406889139.pdf
    • http://pisanie-nut.pl/images/how-to-duplicate-coin-master-spin-hack_GM406889139.pdf
    • http://pisanie-nut.pl/images/minecraft-book-collection_GM479516143.pdf
    • http://pisanie-nut.pl/images/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://pisanie-nut.pl/images/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://pisanie-nut.pl/images/download-minecraft-free-hiapphere_GM479516143.pdf
    • http://pisanie-nut.pl/images/coin-master-link-spin_GM406889139.pdf
    • http://pisanie-nut.pl/images/www-coinmaster-com_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048cc.bin
c0bb8eced6ab869be7b420db84d773874b24f046d74a146414d57642a78567f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x48CC 24444 bytes
font_01_sfnt_off0000800a.bin
d34ad1dbd9dd4a0600043f837e3a6c6fdafb13b781254d1b565cb7d4b46c75dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x800A 18196 bytes