Malicious PDF — malware analysis report

Static analysis result for SHA-256 0132b72d01ee698d…

MALICIOUS

PDF

33.4 KB Created: 2021-06-22 02:11:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e9892a9832d02d894e7a98689eace1cd SHA-1: 710b48b43230f2026839c2518b3f040e8cf30c2f SHA-256: 0132b72d01ee698dcca85b96601c96cf3cbecf79e099da8db8a0cb1921d8aa42
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are related to game cheats and free in-game currency, indicating a link farm or phishing attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs suggests a high likelihood of redirecting users to malicious sites or initiating unwanted downloads. The document's content and structure are consistent with a lure for potentially unwanted applications or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/roblox-games-that-allow-free-cam-game-hack
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/get-free-robux-now_GM431946152.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/moonactive-coin-master_GM406889139.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/how-do-u-get-free-robux_GM431946152.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/free-minecraft-bedrock-server-hosting_GM479516143.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/hack-coin-master-apk-32-download_GM406889139.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/how-do-you-hack-roblox_GM431946152.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/pubg-uc-website-free_GM1330123889.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/minecraft-pe-server-hosting-free_GM479516143.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/zoo-tycoon-cheats-roblox_GM431946152.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/www-roblox-com-play-for-free_GM431946152.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/script-executor-roblox-free_GM431946152.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/wahoogaming-co-free-robux_GM431946152.pdf
    • http://www.vaytechceramic.com/uploaded_files/userfiles/files/mcpe-116_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c3a.bin
2db9fb45e4083020aa590e58b8e76cf67a94627becaca97e5767ab379b8b3fa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3A 21988 bytes
font_01_sfnt_off00005d06.bin
a01d48ad3b9c74719f82a41d38199cd84eff8305db7f2f3299608357378c68f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D06 19344 bytes

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