Malicious PDF — malware analysis report

Static analysis result for SHA-256 174cf9eeef06219e…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 13:40:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 698780bc124f7a3cca2a80293796a40d SHA-1: 0242a44968c3e42a1b67b76efebf80b67ae42c1d SHA-256: 174cf9eeef06219e4b04a2b1ee01868e5a1db57e1a57f0a810e4df68e17ddd65
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that lure users with promises of 'Free Robux' and game hacks. The primary malicious URL identified is http://netcdn.tw/app/431946152/free-robux-group-game-hack, which likely hosts a payload or leads to a phishing site. The presence of multiple related URLs and the ML classifier's high confidence score indicate a malicious intent to trick users into clicking potentially harmful links.

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/431946152/free-robux-group-game-hack
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/freer-pro-tiktok-fans_GM835599320.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-all-free-stuff_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-free-spin-best-link_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-free-gifts_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-coin-master-spin-app_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/free-nike-roblox-shirt_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-booga-booga-hack_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-hacks-android_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-free-iteams_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/roblox-hack-script-give-weapons_GM431946152.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-hack-no-verification_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/coin-master-free-cards_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/instant-free-spins-coin-master_GM406889139.pdf
    • https://elearning.mtsn1kotadumai.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003239.bin
56c7f33e246b4581227275f9b26616ad08669b17985419a7cf41d1b78077f05c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3239 22248 bytes
font_01_sfnt_off000063bc.bin
67507f51078b9d360364fd80bede771b0831b8cadce387b59c9348d966d9fcb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63BC 18892 bytes

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