Malicious PDF — malware analysis report

Static analysis result for SHA-256 93166b9c6d867186…

MALICIOUS

PDF

45.2 KB Created: 2021-05-14 22:36:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4f96afacea9859480245a8d801f994a5 SHA-1: 970eb3a0830e1fbf31d7ff3aaf6661f6821976de SHA-256: 93166b9c6d8671862de86fbf240e2e489cc807819f9f87712f6ecc2abd3bf99b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains lures for free game coins and embeds external URLs, including one pointing to an IP address, suggesting a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the embedded URLs and the nature of the lure indicate a likely attempt to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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 https://netcdn.xyz/app/406889139/how-do-i-get-free-coins-in-coin-master-game-hack
    • http://110.78.114.242/ckfinder/userfiles/files/free-spin-and-coin-blogspot-com_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-links-free-spins_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/mcpe-master-coins-hack_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-robux-hacker-us_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-stop-attack-hack_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-2021-free-spins-link-today_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/real-free-robux-codes_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-robux-apk_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coinmaster-com_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/how-can-i-get-free-robux_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/minecraft-hack-2021_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-money-hack_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-army-robux_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/2021-free-spins-coin-master_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-robux-master_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-promo-codes-for-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a7a.bin
45e184a18950de57d67c92b2da0cc0089cec1f5187509efcc6cf5151376a9d6e
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7A 24692 bytes
font_01_sfnt_off000082fd.bin
1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
pdf-font-stream PDF embedded font (sfnt) at offset 0x82FD 3380 bytes
font_02_sfnt_off00008ee5.bin
a7eb4611cc5e19625cbf9eb325c611c19de71162a0200f7ffd184f09f4ce8017
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE5 18044 bytes