Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7515a14f5356f69…

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 02:01:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 467c2be7edda57be776de0380c401e0e SHA-1: a3c7db6bb1706b9f762cc2e6d2b00cc5a387df47 SHA-256: f7515a14f5356f694c305651618c00b6ca983c2b011cf6b9f0744fed3e9cee51
62 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a visual download button, strongly suggesting a social engineering lure. The URLs point to files related to game hacks and free in-game currency, indicating a likely attempt to trick users into downloading malware disguised as cheats or exploits. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/download-coin-master-apk-hacked-game-hack
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-free-spins-2-5-2021_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/robux-website_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-spin-in-coin-master_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-robux-no-survey-or-human-verification_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/real-roblox_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/www-coin-master-hack-xyz_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/script-executor-roblox-free_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/minecraft-account-hacked_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-free-spin-trick_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/get-free-spins-on-coin-master-2021_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/free-robux-card-codes_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-robux-earn_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/how-to-get-free-robux-without-offers_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/scaffold-minecraft-hack_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004968.bin
04eaac40fe11a123567e07a3fb99031fdbeb9972161cd59d4415fa483e506619
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4968 23984 bytes
font_01_sfnt_off00007ff2.bin
889c97ae1e8c5f6287d7e9e9a77de81d4c7f2c24e7ca8efa3945bbdf42481e01
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF2 18472 bytes