Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c48385bc00ff68e…

MALICIOUS

PDF

35.3 KB Created: 2021-07-01 05:29:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ca444aa7180ce39f4c9b9fa7497c4b8c SHA-1: ad025a79355341fd3d1f01c74fab97d88da195e5 SHA-256: 0c48385bc00ff68ef98cb8a7f25720167e1f8fdeeda2205ac4bd0080b6f20af7
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are presented as "hacks" or generators for popular games. The primary URL http://netcdn.co/app/431946152/robux-hack-game-hack likely serves as a landing page or download source for a secondary payload. The heuristic PDF_SEO_LINK_FARM indicates a deliberate attempt to create a link farm, suggesting a malicious intent to distribute malware or scam users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/robux-hack-game-hack
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/roblox-robux-generator-2021_GM431946152.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/minecraft-servers-that-allow-hacks_GM479516143.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-robux-codes-no-human-verification_GM431946152.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/roblox-free-pets_GM431946152.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-robux-for-free_GM431946152.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/minecraft-pc-download-free-full-version_GM479516143.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-get-spins-on-coin-master-hack_GM406889139.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/daily-free-spins-coin-master-heaven_GM406889139.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/krnl-download_GM431946152.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-game-hack-link_GM406889139.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/roblox-money-hack_GM431946152.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-free-spin-realme-products_GM406889139.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/install-free-game-coin-master_GM406889139.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-hack-apk-android-1_GM406889139.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-hacking-news_GM406889139.pdf
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/hacked-client-for-minecraft-bedrock_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003284.bin
6ee3e3293f852cfda4e33f89a1055720457c0b23b64fcfa26cbbbee6cd42c992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3284 22920 bytes
font_01_sfnt_off000065dd.bin
e8968fd2130dd0e19937d9907a0efa8c300424940f22b7ca5343d475ddd9ad09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 18724 bytes

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