Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0702edebf3bc54…

MALICIOUS

PDF

35.9 KB Created: 2021-06-27 21:13:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6480e42ba886f179de1b94ad082ec26b SHA-1: 9d8eb72e6a0184168c9961fcd6db9818520f86ce SHA-256: ba0702edebf3bc5477f7bfab819805e4891c1af7f427364d34b2cb2436ad2602
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous URLs pointing to sites offering "free Robux" or game cheats, indicating a lure for users to download potentially malicious files. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and embedded URLs supports a phishing or malware distribution attack pattern. No scripts were extracted from this sample, but the overall structure and content suggest a social engineering attempt to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/free-robux-hack-proof-game-hack PDF link annotation
    • http://perpustakaan-stikesmsb.com/repository/pokemon-go-free-id_GM1094591345.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-free-robux-2021-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/hack-roblox-perfil_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-codes-livestream_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/create-own-free-skin-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-how-to-get-free-animations_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-make-roblox-t-shirts-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-play-minecraft-online-for-free_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_off00003392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3392 23044 bytes
SHA-256: ac74e01fdf9aa8316ebea855b248dc3749b60528df49ab68bd9cdb6b51cb6565
font_01_sfnt_off00006786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6786 19040 bytes
SHA-256: 46ac18da4969d56a9cf6ea0cc7e971b79517e6f3814bbbaaf34a3e4c56d6e586

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