Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5e39100eeffc5d1…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 02:42:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5f1bc1203492298e8cbf5f264f3c18d8 SHA-1: 59595962f659440e3992ea6dafb4d62e1403987d SHA-256: d5e39100eeffc5d1ea10c6b2ec1e1e001c4176a10b80b34720b7e43c979c132b
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick users into downloading a payload, likely related to game hacking. The embedded URL http://netcdn.co/app/431946152/alone-roblox-free-game-hack is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence.

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/alone-roblox-free-game-hack PDF link annotation
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/codes-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-roblox-gift-cards-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/bhop-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/hack-roblox-robux-code_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/hire-a-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/roblox-hack-download-2021-for-jack-the-monkey_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/jjsploit-roblox-hack_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/roblox-x10-xp-bleach-soul-of-end-v175-hack_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/boostgamesnet-roblox-free_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/hacking-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/how-to-exploit-with-cheat-engine-in-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-redeem-codes-that-last-all-the-time-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/hacks-for-rogoul-roblox-pllz-teach-me_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-builders-club-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000367a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x367A 22564 bytes
SHA-256: 20b58077eafbcddcb6514c4a7828a675ea4a44e4690d8eb88e01cb022373f5dd
font_01_sfnt_off000068fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FC 18652 bytes
SHA-256: dba754e7776cda88746b9fef77186504ba6c23c00092d3a5f279a86fefefa2a2

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