Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d200bdebc2443f…

MALICIOUS

PDF

45.8 KB Created: 2021-06-11 08:45:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c11d2c22628eee506b392c806e2e83fa SHA-1: 996f6bc2be55e6869b40ba0a5a9c5fc47dc24ee1 SHA-256: 00d200bdebc2443f0f6fbd0c0c844cfc62b6cab7b5046b0d9a51d7ae19af1792
140 Risk Score

Malware Insights

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

The PDF contains a lure impersonating Microsoft to offer free Robux, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and heuristic rules indicate it's a redirector to known malicious infrastructure and a brand-based credential phishing attempt. The embedded URL likely leads to a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/roblox-hack-999.999-robux-2021-pc-game-hack.
  • 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
  • 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/roblox-hack-999.999-robux-2021-pc-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-card-collection-in-coin-master_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
stream_004_off00005277.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5277 26736 bytes
SHA-256: ed8984a80cd09d599958c09daaf92c74b1862c3ccbd9ba1b5b8c8133cb4abdb9
font_01_sfnt_off00008dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DBE 19108 bytes
SHA-256: ff96644af6846e115969cf26734718a1e6187ab1d7e6620563d3d381f0717071

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