Malicious PDF — malware analysis report

Static analysis result for SHA-256 707da10fd73af083…

MALICIOUS

PDF

36.2 KB Created: 2021-05-21 18:13:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: feec80b74b939eb82a4d47bf5376cc0e SHA-1: 1fad43145d1622e1f402da41af509e98f38cc1b5 SHA-256: 707da10fd73af083157d77721aef793594a7bede8780b9a937af7c8bac974fc5
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as game hacks and generators, such as 'Roblox Apk Hack' and 'coin master free spins'. These links redirect to external domains, indicating a likely attempt to trick users into downloading malicious software or visiting phishing pages. The presence of a 'password-protected archive handoff' heuristic suggests that the linked content might be an encrypted payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-apk-hack-game-hack PDF link annotation
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31B6 26152 bytes
SHA-256: 946c8b20317920baf235cc8ded2958a0c7ea89cd4b57b28f468697797253b66e
font_01_sfnt_off00006bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBF 18356 bytes
SHA-256: 7e836b6261bebb63fda2bc6c603fa398fe0a548bc6334e21915c3f4956160db8

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