Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34bfbaf718de357…

MALICIOUS

PDF

35.9 KB Created: 2021-07-08 05:37:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 99159015f23ac0af4ca77cb531ec3a9c SHA-1: 3dda3fc47a55a4341f624b3b7ef35448d1624e30 SHA-256: d34bfbaf718de357a3eaa5d9d5cbe025f57df6ee0a898e5560587a0e07c8795f
62 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and a document body that explicitly advertises free in-game currency and hacks for popular games like Coin Master and Roblox. The presence of a clickable URI pointing to a raw IP address and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or phishing pages. No scripts were extracted from this sample.

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/coin-master-daily-free-spins-link-today-2021-game-hack
    • http://110.78.114.242/ckfinder/userfiles/files/how-do-you-hack-someone-on-roblox_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-levels_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-arsenal-hacks-download_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-dungeon-of-quest-code-cheat_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/como-hackear-coin-master-2021_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-coin-master-spin-app_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-free-clothes-hack_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/300-daily-free-spins-coin-master_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/coin-master-free-coins-and-spins-daily_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/coin-master-email-rewards-link_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/add-robux_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/send-me-500-2021-spins_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-free-robux-website_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-coins-on-coin-master-2021_GM406889139.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/roblox-gift-card-online-free_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/free-robux-and-bc_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/best-roblox-free-hacks-exploits_GM431946152.pdf
    • http://110.78.114.242/ckfinder/userfiles/files/how-to-fly-hack-in-roblox-deathrun_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003348.bin
051f18d3437be14e0035943b9ae350182971eb4eb332b36d24908a533368160b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3348 22796 bytes
font_01_sfnt_off00006685.bin
bda18ad7bc028b2989dfdc10c84b9c87c1dbf0242a88a3a6fbf9217f203e509c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 19344 bytes