Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a099f7e9a80ff4e…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 22:15:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7475f06b60fab10e136433d874ca39b1 SHA-1: 6a5f06359c3e1055db2b87f6ca31f5dd1cfc6914 SHA-256: 1a099f7e9a80ff4e33732680c746313d3836cc7beee68be16601fc291fe6d85c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains embedded URLs and a lure related to game hacks and free currency, indicating a phishing or scam attempt. The presence of a 'password-protected archive' heuristic suggests the document may be designed to trick users into downloading an encrypted payload, which is then decrypted using a provided password. No scripts were extracted from this sample, limiting the ability to determine specific execution methods.

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/431946152/roblox-gift-card-free-codes-game-hack PDF link annotation
    • http://e-library.akbid-purworejo.ac.id//repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/coinmaster_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/unlimited-robux-hack_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/roblox-gift-card-codes-2021-free_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/roblox-jailbreak-speed-hack-cheat-code_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/how-to-get-free-robux-easy-2021-december_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD7 22000 bytes
SHA-256: fde5c309546b2e451d71bc1623953d3959bf95d70aa9ac4a3a7b3c17b39c7f84
font_01_sfnt_off00006049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6049 19048 bytes
SHA-256: d4258182c942e07f86473ad6969c68da3094877f14729de5ac113415e402ceb5

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