Malicious PDF — malware analysis report

Static analysis result for SHA-256 314d9ded3e6b0f66…

MALICIOUS

PDF

45.5 KB Created: 2021-06-04 04:13:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 48544b56c7179c7726336d1d24fc6e10 SHA-1: 8c2dca3704397588798cd3a387067e0ad7ff990d SHA-256: 314d9ded3e6b0f663af546d64e7194bca54474bd8efc4cfbde9e793ac9f0d41c
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA and a download button, which are common lures for phishing or malware distribution. The embedded URL, https://netcdn.online/app/431946152/haw-to-get-free-robux-in-windows-7-2021-game-hack, likely leads to a malicious payload. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/haw-to-get-free-robux-in-windows-7-2021-game-hack PDF link annotation
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/robux-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/pubg-uc-codashop_GM1330123889.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/pokemon-go-free-team-change_GM1094591345.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_off00005265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5265 25864 bytes
SHA-256: c767920fb10695db9fe9a2937c38b2639222820197cc7b7e012fd18aecd524c3
font_01_sfnt_off00008b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B59 19460 bytes
SHA-256: 461facc2bd84d27e436d19ac85da4b81eb41e4bf427bab90c1fd17b74ff1d882

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