Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c861b3c14fede3…

MALICIOUS

PDF

41.5 KB Created: 2021-05-18 04:23:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8e2310024d5f13669fe022d462deb403 SHA-1: 9a9812dd33ac5d3f63188cf6feab461c4c9c39f1 SHA-256: 07c861b3c14fede3b9eda212a03d9b3f292e6b1479b04ba6ba4d3e7fc0aed597
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are structured as SEO-optimized PDF gateways, suggesting a link farm designed to drive traffic. The document body and heuristics indicate a lure related to game hacks and cheats, with a primary URL pointing to a download. The presence of a PDF URI heuristic and the ML classifier strongly indicate malicious intent, likely to deliver a secondary payload or redirect users to malicious sites.

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/minecraft-hacks-xbox-one-game-hack
    • https://studentcareerinfo.com/images/free-minecraft-pe-server_GM479516143.pdf
    • https://studentcareerinfo.com/images/sites-for-free-spins-for-coin-master_GM406889139.pdf
    • https://studentcareerinfo.com/images/coin-master-free-spins-link-today-twitter_GM406889139.pdf
    • https://studentcareerinfo.com/images/free-robux-no-verification-2021-android_GM431946152.pdf
    • https://studentcareerinfo.com/images/show-me-how-to-get-free-robux_GM431946152.pdf
    • https://studentcareerinfo.com/images/how-to-hack-coin-master-game-ios_GM406889139.pdf
    • https://studentcareerinfo.com/images/coin-master-free-spins--spins_GM406889139.pdf
    • https://studentcareerinfo.com/images/roblox-but_GM431946152.pdf
    • https://studentcareerinfo.com/images/wurst-18-9_GM479516143.pdf
    • https://studentcareerinfo.com/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
    • https://studentcareerinfo.com/images/coin-master-free-spins-hack-apk-download_GM406889139.pdf
    • https://studentcareerinfo.com/images/hack-to-send-gold-cards-on-coin-master_GM406889139.pdf
    • https://studentcareerinfo.com/images/rbx-gg-free-robux_GM431946152.pdf
    • https://studentcareerinfo.com/images/coin-master-free-spins-5-10-2021_GM406889139.pdf
    • https://studentcareerinfo.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • https://studentcareerinfo.com/images/can-u-get-free-robux_GM431946152.pdf
    • https://studentcareerinfo.com/images/coinmaster-rewards_GM406889139.pdf
    • https://studentcareerinfo.com/images/free-spin-coin-master-link-download_GM406889139.pdf
    • https://studentcareerinfo.com/images/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdf
    • https://studentcareerinfo.com/images/level-coin_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048e7.bin
3646555a96bc490ef82c7b6d5a93652d7ffe94d01b7363b91bf9844d7073ecdd
pdf-font-stream PDF embedded font (sfnt) at offset 0x48E7 24304 bytes
font_01_sfnt_off00007f2b.bin
02c256a4f31d672ffdf2c78980c9f8d87063a23b9bf8713c78613c8fd45925f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2B 18476 bytes