Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f9171b168fb4968…

MALICIOUS

PDF

36.0 KB Created: 2021-06-28 15:58:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1962f5c5ead9c31036389c58c9802ca0 SHA-1: 7e749c3bfe50ed35af98d18a002da4868318f553 SHA-256: 0f9171b168fb49685fd17b78d94974a08d904428e437f160a7387ac6f91b11db
82 Risk Score

Malware Insights

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

The document contains numerous embedded URLs and a primary external URI pointing to game-related cheats and hacks, suggesting a lure for users to download malicious content. The presence of a 'password-protected archive' heuristic indicates a common tactic to bypass security filters by encrypting the payload. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.co/app/431946152/roblox-you-were-kicked-from-this-game-do-not-cheat-game-hack
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/connection-free-mail-roblox_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-robux-just-enter-username-and-password_GM431946152.pdf
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/https-wwwfree-robuxcom-pc_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdf
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-hack-money-in-roblox-jailbreak_GM431946152.pdf
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/aimbot-hack-roblox-script_GM431946152.pdf
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/free-exotics-roblox-assassin_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/what-is-a-robux_GM431946152.pdf
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/free-minecraft-hacks_GM479516143.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/minecraft-java-edition-free_GM479516143.pdf
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/roblox-blue-tatoo-free_GM431946152.pdf
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/youtube-how-to-get-free-robux_GM431946152.pdf
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/roblox-play-store-free-download_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-get-loads-of-robux-for-free_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/roblox-ps4-free-download_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-get-free-coins-for-coin-master_GM406889139.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/minecraft-build-hacks_GM479516143.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdf
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/click-to-kill-roblox-hack-pastebin_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031a3.bin
bed375a7a07ffbc4199a504eb1efd6fd1497f331cd96b6ab2aca22142bf361fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31A3 22744 bytes
font_01_sfnt_off00006464.bin
6bb2c39b9477a23eeca08939f40819dccbde5871d0e6451b4f6749fd04710fca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6464 20312 bytes

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