Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e380c8a8ff842ee…

MALICIOUS

PDF

45.3 KB Created: 2021-05-14 17:30:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0b13fbac879e033959c00127c781ef74 SHA-1: be2508ec0ed61e1146c8f758e9d0c69cdd0273ec SHA-256: 4e380c8a8ff842ee97e087646719571e8ebde6313b0cf9f1c5395b68db558433
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs and a call-to-action phrase, strongly suggesting it is a lure for downloading potentially malicious files. The ML classifier also flagged it with high confidence. The document body, though heavily obfuscated, contains references to game hacks and cheats, reinforcing the phishing pretext.

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 https://netcdn.xyz/app/479516143/minecraft-book-collection-game-hack
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-free-spins-hack-apk-download_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-pet-food-hack_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/hack-coin-master-online_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-spin-coin-master-app-download_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/wurst-download_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/minecraft-hack-ios_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/get-me-robux-for-free_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-robux-hack-us_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/minecraft-java-hacks_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-spin-online-tool-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/minecraft-server-hacks_GM479516143.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-robux-generator-no-human-verification_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/can-you-actually-get-free-robux_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-mod-apk-latest-version-free-download_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-free-spins-link-hack_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-land-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c7c.bin
a621ec0597418529de05d3f422fe062b04bdb3908f6d92d57256accd8e7ead75
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C7C 30264 bytes
font_01_sfnt_off00008f6e.bin
399702d0ee70d7721e3b7d87823dce0b35203047caa5258f7323b07e9fdc19b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6E 18168 bytes