Malicious PDF — malware analysis report

Static analysis result for SHA-256 1814b79dfdce9c65…

MALICIOUS

PDF

35.7 KB Created: 2021-06-27 04:13:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e39d9440cce16a94c4164b3c6be45032 SHA-1: b74432f22db0ccd570c313b4ee39a91bd9d069ed SHA-256: 1814b79dfdce9c6548414e6217287ba2779454a4a7167c4e663277e51128a806
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a fake CAPTCHA or human verification prompt to trick users into interacting with it. It contains an embedded URI pointing to a suspicious domain, likely intended to download a second-stage payload or redirect to a malicious site. The document body text and extracted URLs suggest a lure related to game hacks or free trials, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/your-life-free-trial-has-expired-roblox-game-hack
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/robux-hacks-admin-commands_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-tiktok-followers-without-verification_GM835599320.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/how-to-manage-server-roblox-script-hack_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/robux-hack-script-pastebin_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-robux-nunchuks_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-the-conquerors-3-hack-2021_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-x-ray-hack_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/cheated-roblox-gun_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/how-to-hack-prison-life-roblox_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-robux-generator-no-buying-apps_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/minecraft-free-download-iphone_GM479516143.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/top3k-roblox-hack_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-robux-for-free-no-human-verification_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/red-boy-v2-jailbreak-roblox-hack_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-hack-scripts-2021_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/cara-cheat-roblox-2021_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdf
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/where-to-get-free-robux-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032bb.bin
077e1e555932b337eace903d8494e65a752d78af031dd0421a88e334afb64b80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32BB 22684 bytes
font_01_sfnt_off0000655c.bin
0b083f4d9f4046fad174422220eae9a8721b2f72f32d7415fd4b5bee0c82846c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x655C 19420 bytes

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