Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6669f7b6e7488a7…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 19:43:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6d7ffc410e3cf6e696639c5ef0fbd2d2 SHA-1: ee1ba3790f9917340f32fdafa5d528d72c612210 SHA-256: f6669f7b6e7488a7a28e6feb8c1f37d50c411b7dc652ff6eb19fdefa751d4f83
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 link in its body text, all directing users to sites offering game hacks and cheats. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic of encrypting malicious payloads, which are then decrypted using provided password instructions. The ML classifier strongly flags this PDF as malicious, indicating a high likelihood of it serving as a dropper for further malware.

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.tw/app/406889139/coin-master-hack-game-hack
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/appbounty-net-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/boku-no-roblox-remastered-op-gui-script-hack_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-cards-hack-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-vouchers_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/working-free-robux-site_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-hack-without-human-verification-or-survey_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-flower-crown-free_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-minecraft-account-and-password-generator_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-xyz_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-safe_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-free-items-hack-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-money_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-prison-life-v20-infinite-ammo-hack-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-vpns-for-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-fast-speed-hack_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-use-cheat-engine-on-roblox-winter-crisis_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fb7.bin
32b54c39c0729b157133ab3b4c6f01a34e8b54157f1c98ce5d81c40fcc8cbeda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB7 22668 bytes
font_01_sfnt_off00006229.bin
2f3a5855c5bac228d8d27cc7f61b57eebad79d58a924e470a0477843dff273c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6229 18004 bytes

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