Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7bcb6d7b09eed6…

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 06:57:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0f06f2617194c5033a1574c8a2786abb SHA-1: 2e5ff71badfc7f38a6dd0bc430cebe4ca2298a11 SHA-256: cd7bcb6d7b09eed665642960eb5e4e7cfb357c8e515d7a2cd7f2db517b7b8c0f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a heuristic firing for a "secret recovery" lure, indicating a phishing or scam attempt. The document body explicitly mentions "Get Free Robux" and links to various game-related "hacks" and "generators". The presence of these lures suggests the document is designed to trick users into downloading potentially malicious files or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.online/app/431946152/get-free-robux-without-doing-anything-game-hack
    • https://buanaabadii.com/ckfinder/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/free-minecraft-account-generator_GM479516143.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/how-to-make-a-roblox-group-for-free_GM431946152.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/minecraft-windows-10-edition-hacks_GM479516143.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/coin-master-cheat-apk-free-download_GM406889139.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/free-free-robux_GM431946152.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/mcmaster-club-coin-master-hack_GM406889139.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/free-spin-and-coin-blogspot_GM406889139.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/minecraft-java-edition-free-download_GM479516143.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/download-hacked-games-coin-master_GM406889139.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/fake-robux-codes_GM431946152.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/free-robux-no-scam_GM431946152.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/send-me-500-2021-spins_GM406889139.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/roblox-arsenal-hack_GM431946152.pdf
    • https://buanaabadii.com/ckfinder/userfiles/files/free-robux-gift-card-codes-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000525e.bin
0eaa44a44332b2098d3d1e0919b094956a49a141d1f6d0b000cd454eae71cde8
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x525E 27072 bytes
font_01_sfnt_off00009048.bin
a9e3aa10522a438dd9eef37bb3e7f322f16e38379d063b4a50e22a05dda2bc13
pdf-font-stream PDF embedded font (sfnt) at offset 0x9048 19240 bytes