Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dc11f90128457b4…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 05:29:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c7207bb3d33f8ffe5921ce5c260c3a36 SHA-1: 533287b83efe054a2300f0f7bd0d74d3ac873995 SHA-256: 5dc11f90128457b4b1f271376206d4e8f315d4ae0afd3158967c92e5f81f7c54
160 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that explicitly promises free in-game items for Roblox, acting as a lure. The presence of a high-confidence ML classifier firing and multiple external URI findings strongly suggest malicious intent, likely to direct users to download a second-stage payload or exploit. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.co/app/431946152/how-to-get-a-free-shoulder-pet-in-roblox-game-hack In PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-hack-2021-download_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/eran-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-shower-simulator-free-vip_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-draw-an-eye-on-free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/nuevo-hack-generador-de-robux-de-roblox-by-pignoise_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-things-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-hacking-robux-no-suvey-and-download-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-download-free-app_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-money-glitch-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-hack-tycoons-on-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-free-robux-download-no-survey_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/get-a-free-promo-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-robux-com_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
font_00_sfnt_off000030d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D0 22144 bytes
SHA-256: dcfb8c55aed4152419285599b9999fcd7e648dcf717d1a1a5229829d6e269b89
font_01_sfnt_off000061d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D5 19552 bytes
SHA-256: cc0a68ace2c56267e93184c407543a2139a1e95993580cf5252375c20172d72a

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