Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f33ec077e05cfd…

MALICIOUS

PDF

35.3 KB Created: 2021-07-01 23:50:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 337ea2b986bd3a8149d497c5c7bb13d5 SHA-1: 53e9ce6cbbce07242158f83fe71baca3ed9a19af SHA-256: 95f33ec077e05cfdb4850bd0bd75d37814d88a2893f7507396d0c8bb92f9ce52
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains invisible links that lead to CAPTCHA-themed lures, suggesting a phishing or malware distribution attempt. One of the primary external URIs points to a file named 'roblox-cheat-engine-reddit-game-hack', indicating a lure for game-related exploits or cheats. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LURE
    PDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
  • 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-cheat-engine-reddit-game-hack
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-unboxing-simulator-hack_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/hacks-para-roblox-mm2-armas_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/promocodes-roblox-free-robux_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-candy-game-roblox_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack-no-survey-no-download-2021_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-captcha_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-no-hacking-acc_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-for-real_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-minecraft-hacks_GM479516143.pdf
    • https://www.learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/play-minecraft-free-online-no-download_GM479516143.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-use-cheat-engine-64-on-roblox-2021_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-free-gift-card-generator_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-stuff-in-catalog-roblox-2021-nick_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/ok-google-free-roblox_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/get-28-robux-hack_GM431946152.pdf
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-ingame-score-hacks_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000335c.bin
8b374be169895fd69cc443a26e26156b22d7467e75d842643e325b453560950a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x335C 22360 bytes
font_01_sfnt_off000064c2.bin
7652eac9e00db573676bdf0d2f42c79f4f347d432230bf30a988760e80d2ee8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C2 19048 bytes

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