Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd48eeba8af5b9ce…

MALICIOUS

PDF

44.8 KB Created: 2021-06-02 11:48:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 045e28c823b34ef4a7637346d442b688 SHA-1: e3294e2dfe5472f8ca7edaa3e33d59b20b6e8c42 SHA-256: bd48eeba8af5b9ce6a7c02f4a92b39fc896c46c7c33e43ebff05e2ef519d3d13
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are SEO-optimized and point to game-related cheats or hacks, suggesting a lure for users to download malicious content. The presence of a download button lure further supports this. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a potential for malicious JavaScript execution or redirection to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/roblox-hack-prison-life-game-hack
    • https://gryps.de/images/coin-master-hack-no-human-verification-2021_GM406889139.pdf
    • https://gryps.de/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdf
    • https://gryps.de/images/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://gryps.de/images/coin-master-free-spins-coins_GM406889139.pdf
    • https://gryps.de/images/coin-master-free-spins-2021_GM406889139.pdf
    • https://gryps.de/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdf
    • https://gryps.de/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdf
    • https://gryps.de/images/game-toolbox_GM479516143.pdf
    • https://gryps.de/images/coin-master-free-spins-link-may-2021_GM406889139.pdf
    • https://gryps.de/images/best-free-spin-app-for-coin-master_GM406889139.pdf
    • https://gryps.de/images/free-games-like-minecraft_GM479516143.pdf
    • https://gryps.de/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdf
    • https://gryps.de/images/free-spins-for-coin-master-2021_GM406889139.pdf
    • https://gryps.de/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdf
    • https://gryps.de/images/get-free-robux-2021_GM431946152.pdf
    • https://gryps.de/images/free-links-coin-master_GM406889139.pdf
    • https://gryps.de/images/is-minecraft-education-edition-free_GM479516143.pdf
    • https://gryps.de/images/classic-minecraft-net-hacks_GM479516143.pdf
    • https://gryps.de/images/free-minecraft-server-maker_GM479516143.pdf
    • https://gryps.de/images/coin-master-spins-for-free_GM406889139.pdf
    • https://robuxhaxs.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fc8.bin
1fc01da5f29cdc86f8b6e50d12bed02d0eee2beb15f419593916eb367d254bb3
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC8 26276 bytes
font_01_sfnt_off00008c10.bin
e44f08f0c7b8c71712af681c64f2927a8aa9bdab7bf09733064eac2634fd09ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C10 18456 bytes