Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c682e591ec80b43…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 20:55:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 25d292f0be710d77b2fde6e3ca7a2096 SHA-1: e840485c336b412a6b9f15cda14d023252b2a00c SHA-256: 9c682e591ec80b43bcffeb2259d62228e95549b828347d3aa60229d7c2889e98
62 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to an IP address, that promise free in-game currency or hacks for popular games. The ML classifier strongly indicated maliciousness, and the presence of these lures suggests a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to these lures and the URLs themselves.

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/406889139/100-free-spins-coin-master-game-hack
    • http://111.68.26.74/widyapustaka/repository/free-codes-for-robux-on-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-invitation-template-free_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-free-outfit-ideas_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-roblox-account-2021-february-2_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/doge-free-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-pink-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-apk-free-download_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-com_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/dll-hack-roblox-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/avatar-animation-free-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-spins-coin-master_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-gift-card-codes-2021-april_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-without-human-verification-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-robux-really-works-easy_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/get-free-robux-gg_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-tiradas-gratis_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-deutsch_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/hacker-music-roblox-id_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-colouring-pages-free-girl_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003102.bin
c719af599e99456040f7d8b62b1df167a993adba2661eefb73f01cd72c96b8c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x3102 22476 bytes
font_01_sfnt_off0000634b.bin
d0c04ff51ad59f6355ad4f24aeb86ad145506544650f67de66568f082738138f
pdf-font-stream PDF embedded font (sfnt) at offset 0x634B 18452 bytes