Malicious PDF — malware analysis report

Static analysis result for SHA-256 04c4731f5d44fb1c…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 18:16:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9c5ebcd7d31dd6f62b6079ee707b12a8 SHA-1: 4bafd00e6df71208d888969f492a05b3167ad52d SHA-256: 04c4731f5d44fb1c7213ad2af7d1abf69e865e16e336eca387e5ff8a4a63a17e
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that explicitly mentions 'free spins', 'free robux', and 'game hack', indicating a lure for potentially malicious content. The presence of external URIs and an IP literal in the document further supports this, suggesting the file is designed to redirect users to malicious websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

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/406889139/how-to-get-free-spins-coin-master-game-hack
    • http://111.68.26.74/widyapustaka/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-cute-royale-high-outfits-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-apk-2021-download_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/free-hacks-inspect-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/rblx-gg-free-robux-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/10-roblox-games-that-give-free-robux-2021-febuary_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/why-cant-i-upload-audio-for-free-on-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-help-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/amazing-raps-cheat-for-auto-rap-battles-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-robux-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-hack-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/minecraft-net-free_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-cheat-tower-deffense_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-minecraft-account-list_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/pastebin-robux-hack-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/best-robux-hack-ever_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-roebucks-in-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/robux-hacks-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/hacking-roblox-acounts-sites_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000332c.bin
457c84837d038e904aa666384b5aa830bc90572aa41c6993b7946dadb6611d36
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x332C 23424 bytes
font_01_sfnt_off00006822.bin
23f71a9ba4d854b783c042dde3b810d75211435ebb04f16eb6963276a01a3aa2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6822 18336 bytes