Malicious PDF — malware analysis report

Static analysis result for SHA-256 528316fe7050db3b…

MALICIOUS

PDF

40.9 KB Created: 2021-04-23 15:55:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3f41d3302ef2cff261daa3e77237e7ed SHA-1: bb75ca8c00f80d7b5da64716c40e71a6e509d465 SHA-256: 528316fe7050db3bd8716d67dad6b30a28de4734098a9ed66009b0345cb381ff
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 0.9941

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://netsecure.top/app/431946152/project-jojo-roblox-hack-game-hack PDF link annotation
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-building-hacker-gegen.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-capatcha.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-items-2021.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-and-tix-no-human-verification.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-free-radio-in-jailbreak-deutsch.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/infinite-robux-no-human-verification-hack.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-the-pizzeria-rp-remastered-coins-hack.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/como-hackear-roblox-sin-descargar-nada.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/cheat-roblox-dongeon-quest-installer.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/best-hacks-roblox.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_003_off00004226.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4226 26140 bytes
SHA-256: 830022f0b9f6f203f6237648250947ac890f8cba7f497afc4ec75c0a0f257551
font_01_sfnt_off00007c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C82 18796 bytes
SHA-256: fdc86860ddfa3a688a6ba290bf13323fc154fa5410a399c486bf4d453de55a20

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