Malicious PDF — malware analysis report

Static analysis result for SHA-256 75298bd285dd9951…

MALICIOUS

PDF

36.3 KB Created: 2021-05-22 01:38:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 25a91a07ae613077208276aaf4c7dbad SHA-1: 8b58876b4cbf95596fb2978f7b33480957c8f009 SHA-256: 75298bd285dd9951293deb879ecf73aacd25c80748b287c6956291838a8f6c9f
122 Risk Score

Malware Insights

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

The PDF document contains a high-confidence heuristic indicating it's a brand-impersonation credential phishing lure, specifically impersonating Netflix to promote a "free Robux generator". The embedded link directs users to a suspicious domain, likely to facilitate credential theft or download a secondary payload. No scripts were extracted, but the document body and heuristics strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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.
  • 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.xyz/app/431946152/lazyblox-com-free-robux-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
  • 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/lazyblox-com-free-robux-game-hack PDF link annotation
    • http://pa-kabmadiun.go.id/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://pa-kabmadiun.go.id/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://pa-kabmadiun.go.id/images/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pa-kabmadiun.go.id/images/50-free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://pa-kabmadiun.go.id/images/ways-to-get-free-robux_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
stream_002_off000030a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30A0 25152 bytes
SHA-256: cc35b0cb92571858a546b8550702d6444237d809eaf43e27b32dc292a8ce6edf
font_01_sfnt_off00006aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAD 18840 bytes
SHA-256: c7a12f46af2ab2e47f5138dce66a585f9a7928693d977e55c66cac0a0236f754

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