Malicious PDF — malware analysis report

Static analysis result for SHA-256 d363c422f52bfa20…

MALICIOUS

PDF

45.1 KB Created: 2021-05-11 19:35:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9bc94de9147a0819abaa2bb64053cb38 SHA-1: 0730f9fbeca9a568b8bb5e6f13c7847c1d9cd093 SHA-256: d363c422f52bfa200bd34cd763af6205f369d710ee3d23d24827595d88f50fd1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links and a link farm, directing users to websites that appear to offer game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a link farm suggests a distribution or phishing attempt. The document body, though heavily obfuscated, contains references to game hacks and URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/406889139/coin-master-game-free-spin-game-hack
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-fan-page_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/roblox-script-hacks_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-no-human-verify_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-hack-game-download_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-spins-and-coins-com_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-hack-ios-jailbreak_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/how-to-install-minecraft-for-free_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-codes-2021-real_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/get-free-robux-without-human-verification_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/apps-for-free-robux_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/bloxpink-free-robux_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-daily-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ca8.bin
808781e5afccfefbb3f4aba83c372d65ba439c65327ad3207c483ccc61479ae4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CA8 24344 bytes
font_01_sfnt_off0000845a.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x845A 2880 bytes
font_02_sfnt_off00008e45.bin
504bf69ab615d46cf168ba32f934bf745dfb0b3d16564297e15ae7f7ea829546		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E45 18148 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.