Malicious PDF — malware analysis report

Static analysis result for SHA-256 3049cbeb41283d09…

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 19:29:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 749817bb9c2dd11e1bb4de0b63d75286 SHA-1: 4d48a78ee87f20120d096a1178b09757f8d55f56 SHA-256: 3049cbeb41283d09338675a9a047871d100492b0fdbdb02a9ef958fb91a2ce8f
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to IP addresses, that are designed to lure users into downloading game-related hacks and currency. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a call-to-action button further supports a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded links suggest it's part of a phishing campaign to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.tw/app/479516143/wurst-115-game-hack
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-real-2021_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/robux-free-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/hack-roblox-hack-free_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-34-4-free-download_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/funbloxxyz-free-robux_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-hack-2021_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-spins-hack-iphone_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-coins-link_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-hack-roblox-money_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/vip-roblox-free_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/roblox-hack-client_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/www-coin-master-hack-com_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-robux-roblox-wiki_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-raps-for-outo-rap-batils-for-roblox_GM431946152.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/free-minecraft-alt-accounts_GM479516143.pdf
    • http://110.164.163.187/ckfinder/userfiles/files/get-free-minecraft-account_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003063.bin
78828b388eb986833d8af2ea00fd011212b2d75fc59269abf985295772784fa9
pdf-font-stream PDF embedded font (sfnt) at offset 0x3063 22888 bytes
font_01_sfnt_off00006336.bin
aae8f554f9dbfa6de7f67aea7508dd29eac015a7595ddec0685b2a6423b5fdb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6336 18312 bytes