Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3ffa20a1a5a48af…

MALICIOUS

PDF

48.3 KB Created: 2021-06-11 03:04:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f39579b0b998bf9b77754033039061d3 SHA-1: 56c849a16895a59114d4ae7b53933d01af1df471 SHA-256: a3ffa20a1a5a48af3207c81ec98a3e41d9d9e2737074867de7a1fdb2f29db661
82 Risk Score

Malware Insights

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

The PDF document contains a heuristic indicating it displays a fake CAPTCHA or human verification prompt, a common social engineering tactic. It also includes an external URI pointing to a URL that appears to be related to game hacks, suggesting a lure to download or interact with malicious content. The presence of a download button lure further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/hack-vampire-hunters-2-roblox-game-hack PDF link annotation
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/roblox-mad-city-money-cheat_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/how-to-hack-a-2021-roblox-account_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5552 24636 bytes
SHA-256: afaef8484b1408e7641ccb7b1cb42de2d7f44df10d8f1fe06bbddf05e02f1879
font_01_sfnt_off00008d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D33 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000096e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96E4 19240 bytes
SHA-256: ed9ed5acda0b852d4ccf5e4510bbaaa8878658ad2f80d9bae4a109fe6f3732be

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