Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f7c1b3f21a05016…

MALICIOUS

PDF

47.2 KB Created: 2021-05-16 20:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 83c0699fbacc44d02d526eb6cbb4c841 SHA-1: 30ff63f6d550cd9ca2b1f47182ebdaa6835e94c6 SHA-256: 1f7c1b3f21a05016c2d67ae83bfc84d9f0a1329ecab650112ae00cfcc1e8dd7f
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a fake CAPTCHA lure to trick users into clicking on numerous external links, likely leading to malicious websites or malware downloads. The document also contains embedded URIs and a large number of linked PDFs, suggesting a link farm designed to distribute malicious content. No scripts were extracted, but the PDF structure and heuristics indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://netcdn.xyz/app/431946152/play-games-for-robux-game-hack
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-heaven_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/cm-free-spin-link-today_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-do-you-get-free-coins-in-coin-master_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-daily-spins_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/best-minecraft-hacked-client_GM479516143.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-date-and-time-hack_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/hackear-coin-master-sin-root_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/minecraft-116-1-download_GM479516143.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/can-i-get-free-robux_GM431946152.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdf
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/play-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c70.bin
549ca0ce8efda3406806822fdb15df4c84538b945bbc8d73a48d15261ede79f9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C70 25916 bytes
font_01_sfnt_off0000873e.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873E 5696 bytes
font_02_sfnt_off00009450.bin
06a2d1523bd9c848a831190500e9901f2d0a20788a0b9c8c3ecae23e11ffa26a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9450 18912 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.