Malicious PDF — malware analysis report

Static analysis result for SHA-256 683df2d7145c046d…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 14:40:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a82ce611658d55980e03bd042dfc9b07 SHA-1: c278dd2c7ebf42a9b6e5494bec3b7175aa9f9f4a SHA-256: 683df2d7145c046d8627cc93562d2c7e7d3121c0841449e1ad246f5c513f6b07
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The document contains numerous embedded URLs and a prominent external URI pointing to sites offering game cheats and hacks, strongly suggesting a phishing or malware distribution lure. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a download button lure and callback phishing context further supports a malicious intent to trick users into downloading further payloads or engaging with fraudulent services.

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.tw/app/406889139/how-to-get-more-spins-on-coin-master-game-hack
    • https://pustaka.widyakartika.ac.id/repository/roblox-com-games-referrer-roblox-player_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/download-hack-robux-2021_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-deep-space-tycoon-hack-script_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/mcpe-master-coins-hack_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-parkour-cheater-tag_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/pastebin-hack-roblox-free-robux_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/roblox-shard-seekers-hack_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spin-download_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/minecraft-modded-client_GM479516143.pdf
    • https://pustaka.widyakartika.ac.id/repository/hacker-typer-roblox_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdf
    • https://pustaka.widyakartika.ac.id/repository/pokemon-go-kanto-free-pass_GM1094591345.pdf
    • https://pustaka.widyakartika.ac.id/repository/sop-hacks-roblox_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/can-someone-hack-your-personal-information-from-roblox_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/free-robux-promo-codes_GM431946152.pdf
    • https://pustaka.widyakartika.ac.id/repository/hacks-de-roblox-prueba_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003397.bin
cec6137d6df97b77a5e2e7b73a945d6f886fdab145d153442f93570392f82cc2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3397 22668 bytes
font_01_sfnt_off00006648.bin
072a98bed821139b72faa0857d5d79503d06e00f528252fbc36dcee34d4ba15f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6648 18176 bytes

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