Malicious PDF — malware analysis report

Static analysis result for SHA-256 e669c219fc42c7c1…

MALICIOUS

PDF

42.0 KB Created: 2021-04-27 11:19:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 607b856cdb1d9bfb12cbe3a67650f29e SHA-1: 699d5722f7aae5410820d6382df26b73df4200a5 SHA-256: e669c219fc42c7c13bf1083e3b068b185f94fcc443a54d17614b4fd9f88c0a34
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, "CLICK HERE TO ACCESS ROBLOX GENERATOR", designed to trick users into visiting malicious URLs. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-money-script-roblox-pastebin-game-hack, which is likely a lure for game-related cheats or scams. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution (T1059.007) to facilitate further malicious activity, such as downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/free-money-script-roblox-pastebin-game-hack PDF link annotation
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-get-free-robux-on-ipad-without-downloading-anything.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-get-pants-not-by-roblox-free.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-gamepasses-for-free-script.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-hack-roblox-catalog-2021.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-get-infinite-robux-hack.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-acount-info-hack-with-robux.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-unblocked-hacked.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/the-plaza-roblox-money-cheat.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-get-free-money-in-the-plaza-roblox.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-stuff-hack-roblox.pdfIn PDF document text
    • https://freerobux.cyouIn 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_003_off00004444.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4444 26376 bytes
SHA-256: 3e0e2f1e589e8856f966f7be2311b2edc3e2db06a04ba34458ba0d582d025859
font_01_sfnt_off00008005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8005 19108 bytes
SHA-256: 58c458e1ffdc5d71940081df2637bca2b1c4bd8b9f885630adde666e58ede0d4

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