Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b370757ee501e51…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 23:17:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5c07f49de1d6f19042f7bee3c0980765 SHA-1: 6c70e4977bc7256e933175466cd1c8c9eb562105 SHA-256: 8b370757ee501e51d2c1bcef0a631ca6d0792a4163d59fa7e8438ec3d74817e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free Robux and game hacks, directing users to a known malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the overall pattern indicates a social engineering attack.

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/do-you-want-free-robux-copypaste-game-hack In PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/mediafre-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-vip-link-for-power-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-grouos_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-free-admin-powers-game_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-weight-lifting-simulator-3-hack-script_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-free-robux-by-joedaddy_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-hack-no-fake_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-change-your-roblox-name-for-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-generator-quiz_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/free-robux-for-roblox-cheats-and-guide-download-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-items-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-free-walk-animation_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-hack-force-field-in-cheart-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-work-at-a-pizza-place-hack-script_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-everything-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/hacks-to-get-free-robux-trackid-sp006_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
font_00_sfnt_off0000312b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312B 22484 bytes
SHA-256: 32a604bef9173b26513cecf3f6654bbc2e0c36d5d7a2bc31ef42fdba11aeecdd
font_01_sfnt_off0000635a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635A 19704 bytes
SHA-256: 7ff82b49b46080dd84b48c07550b93b02ba261fdf8b7539b5c622fd2b7dc749f

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