Malicious PDF — malware analysis report

Static analysis result for SHA-256 d438addc9f912033…

MALICIOUS

PDF

39.0 KB Created: 2021-05-23 14:42:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7fc91a4a891fccf5543b7e7550c78d99 SHA-1: b5bab5d0168e963f09f9300b174bfcd18d8e3aad SHA-256: d438addc9f912033d94f407a35ad5c469c6bdb6069293ada039cbe39b7c19fd2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/robux-gift-card-free-game-hack PDF link annotation
    • https://diendientuvn.com/public/upload/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-home_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/roblox-lovenet_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-hack-no-human-verification_GM431946152.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_off000035f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35F2 28848 bytes
SHA-256: 7337d76e9abe6edc9d0baf1928ec79d47a1fcf91a203ad8ea70a1c29ad649fc5
font_01_sfnt_off00007652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7652 18640 bytes
SHA-256: dc19c2dc7c571358abc7904f3409549de68542ff7a2dde77b507fd070c6276df

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