Malicious PDF — malware analysis report

Static analysis result for SHA-256 96cb87b4f5118955…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 14:01:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d59d1d3f0c2ec89ecdb222ca2df61ca2 SHA-1: 5383efad6100acf835c1e615ea9cce5d21c57eb8 SHA-256: 96cb87b4f51189559d81d65e24c1067ac2a8d17aba18ed42d963c4a0277b0a21
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, encouraging users to click on embedded links. The primary link directs to a URL associated with game hacks, suggesting a social engineering attempt to trick users into downloading potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/roblox-free-rubox-game-hack PDF link annotation
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalhuda.sch.id/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.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_off00004c1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C1F 25052 bytes
SHA-256: a282a848689ec524aa9da8858a6a032627938d6c7fb44e16be75d7aa70cd2bf9
font_01_sfnt_off00008582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8582 18088 bytes
SHA-256: 03c92d59c548fbfdae08874221752d30f8caaed88781636bf7d18542e7c5fe52

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