Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb7aa71530382139…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 10:44:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ca3f8a127fbe68316dfe958df5bd15c9 SHA-1: 7f865b81afa761fea8ea98e6caa8c8e2fab1737e SHA-256: cb7aa7153038213930993e7a9344743a93865d885270e9fcc17ed6b2213e873d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous embedded URLs and references to 'Roblox Hack' and 'free Robux', indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent to redirect users to harmful sites. The document's content and heuristics suggest it is designed to trick users into clicking links that lead to malware or phishing pages.

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/roblox-hack-com-game-hack
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-promo-codes_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/youtube-is-getting-a-roblox-account-hack_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-robux-games_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-2021-hack_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/what-is-wurst_GM479516143.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-do-you-hack-on-roblox-assassin_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-phantom-forces-money-hack-2021_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-hack-app-link_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-ban_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-create-vip-server-roblox-for-free_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/can-i-get-minecraft-for-free_GM479516143.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-minecraft-thumbnails_GM479516143.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-vip-server-roblox-anime-battlegrounds_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-apocalypse-rising-hack_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-foxy-food-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fea.bin
dab7947d9637c6b916f2e22d5cbc9896f71e28ed40651d3c1edda4a3481e8205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEA 23600 bytes
font_01_sfnt_off000063cc.bin
6d04b5b4db5b45e378875975e26f0e3af663697016fd07aaaf83c18ceb43a6ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CC 18916 bytes

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