Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f247c188f8faff6…

MALICIOUS

PDF

48.7 KB Created: 2021-06-02 16:26:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2c9a32412b8b110c08c84d30740f8663 SHA-1: fbc67e76bc5e9226be331201075e5ffe390bc722 SHA-256: 1f247c188f8faff67c33c9faa23bdf54cb785b2f6e04395a66cb4cd492811a78
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, identified as a link farm, directing users to various websites. The document body, though heavily obfuscated, contains references to 'Roblox Message Hack' and includes URLs that appear to be lures for game-related cheats or hacks. The ML classifier strongly indicated maliciousness, and the presence of a mass external link farm suggests a distribution or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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-message-hack-game-hack
    • https://ceranique.nl/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdf
    • https://ceranique.nl/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • https://ceranique.nl/images/cute-free-roblox-outfits_GM431946152.pdf
    • https://ceranique.nl/images/how-many-levels-does-coin-master-have_GM406889139.pdf
    • https://ceranique.nl/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdf
    • https://ceranique.nl/images/free-coin-master-spin-daily-link_GM406889139.pdf
    • https://ceranique.nl/images/how-to-get-free-robux-without-paying_GM431946152.pdf
    • https://ceranique.nl/images/coin-master-gold-cards-free_GM406889139.pdf
    • https://ceranique.nl/images/how-to-get-coins-on-tiktok-for-free_GM835599320.pdf
    • https://ceranique.nl/images/hack-a-game_GM431946152.pdf
    • https://ceranique.nl/images/free-roblox-avatar_GM431946152.pdf
    • https://ceranique.nl/images/hack-coin-master-nyc_GM406889139.pdf
    • https://ceranique.nl/images/minecraft-hacked-client-112-2_GM479516143.pdf
    • https://ceranique.nl/images/coin-master-free-spins-and-coins-daily_GM406889139.pdf
    • https://ceranique.nl/images/free-spins-on-coin-master-2021_GM406889139.pdf
    • https://ceranique.nl/images/coin-master-daily-free-spins-hack_GM406889139.pdf
    • https://ceranique.nl/images/how-do-you-get-roblox-for-free_GM431946152.pdf
    • https://ceranique.nl/images/minecraft-free-apk-download-016-0_GM479516143.pdf
    • https://ceranique.nl/images/free-roblox-toy-codes_GM431946152.pdf
    • https://ceranique.nl/images/coin-master-free-gifts_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000554d.bin
6ca4aec6aa2d942a473e2cbb50bb97d0ed1bc914c75dce8d394e69d2b9105d09
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x554D 25428 bytes
font_01_sfnt_off00009053.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
pdf-font-stream PDF embedded font (sfnt) at offset 0x9053 2880 bytes
font_02_sfnt_off00009a3e.bin
a36394fc58232f71968af1112fc2c9b614d34f63011a8960cc82e4ace38cbca8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3E 18668 bytes