Malicious PDF — malware analysis report

Static analysis result for SHA-256 3726be4d06ac3b90…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 01:53:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c4dac0a81697b73eaf0e793bda6a549c SHA-1: 31631200ec8413642553ffda1323ee40e1a02da3 SHA-256: 3726be4d06ac3b900bd4463aa8f56f57d643c93818218369781e7a2a76d3c991
62 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a document body that promotes 'unlimited Robux' and game cheats, indicating a lure for potentially malicious downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs, including one pointing to a raw IP address, reinforces the malicious intent. The document likely serves as a phishing lure to trick users into downloading malware or visiting malicious sites.

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/431946152/how-to-get-unlimited-robux-2021-game-hack
    • http://111.68.26.74/widyapustaka/repository/roblox-pet-simulator-cheats_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-hair-roblox-codes-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-pastebin_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-do-you-get-free-admin-commands-on-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-reddit_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-online-hack-generator_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-doge-free_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/cute-free-roblox-outfits_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/pastebin-free-robux-code_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-not-get-hacked-in-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-robux-hack-2021-equilibrium_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/como-descargar-hacks-para-roblox-red-boy_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-programers_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/minecraft-116-free_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/cheat-extension-google-pour-cheay-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-cheats_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/pubg-uc-online-hack_GM1330123889.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-gold-cards-free_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003148.bin
027cfc960bd2e9e3eb421ed822122431eab3815df5d4d8dfe74e286624ad12bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x3148 22304 bytes
font_01_sfnt_off000062fa.bin
278fdd7327daa8a6414ea0a2903b1a6c0a54117624bd7cf29ca19a8e75478411
pdf-font-stream PDF embedded font (sfnt) at offset 0x62FA 19852 bytes