Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a4f76e40225e3ec…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 14:59:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4f758611331a91b0712de876b2711a64 SHA-1: a00be11c60315e0de74c649c10d2478dd8c08054 SHA-256: 9a4f76e40225e3ec5af9e41ceb8f66412c9fd7b6983e3c2f2057800bbfccbc25
82 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a prominent call-to-action phrase, suggesting a lure for users to download potentially malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be instructing users on how to handle a password-protected archive, a common tactic to bypass security filters. The ML classifier strongly flagged this PDF as malicious.

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/get-free-promo-codes-roblox-game-hack
    • http://library.patria-artha.ac.id/repository/robux-hack-generator_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/how-to-make-free-roblox-clothes_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/coin-master-jackpot-hack_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/robux-hack-generator-no-survey_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/instan-kill-boss-hack-script-dungeon-quest-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/roblox-hack-how-to-get-someones-password_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/roblox-to-get-robux-hack_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/escript-executer-roblox-free-2021_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-roblox-promo_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/imzyf-roblox-hacks_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/cheats-that-make-you-get-staff-on-roblox-on-computer_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/hack-para-dragon-ball-rage-2021-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-robux-and-tix-hack-no-survey_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-robux-toy-codes_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/how-to-get-any-item-free-on-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-coin-master-spins-blogger_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000316c.bin
67fb0a6a36f1b9463f9988c7e3c81fc5118c063914eb4aeddcd99112f093e5c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x316C 22240 bytes
font_01_sfnt_off000062c9.bin
c37c10693553871bfcd8d5913380d7df84fa37769554a318ee72a4bebaf23022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 19344 bytes

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