Malicious PDF — malware analysis report

Static analysis result for SHA-256 6787f6a192bd2b96…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 09:08:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b0744c9f855ddf944344046ba0e8be94 SHA-1: 5c5c1bf511449b7ff2dfa5f0e44409015da5dc94 SHA-256: 6787f6a192bd2b96690020a86aedc01f52fada231c8a3c494175b28a3d35bb49
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector, specifically advertising 'robux scam game hack' content. The document body and heuristics confirm this is a lure for potentially malicious content, likely a phishing or scam attempt. No scripts were extracted, but the primary function appears to be directing users to malicious infrastructure.

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.tw/app/431946152/robux-scam-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/free-printable-roblox-banner_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-coins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/atticus129-roblox-profile-hacked-account_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-tiktok-fans-hack_GM835599320.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coinmaster_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-emergency-response-liberty-county-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hack-roblox-2021-jail-break-august_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-atms-in-liberty-county-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-game-card-pins_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/best-minecraft-hacked-client_GM479516143.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_off00002d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7A 22220 bytes
SHA-256: 81887b8fc9d4850c400ebdbb4bab992239f701d41dfa4d735291879cd1c63487
font_01_sfnt_off00005efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFE 18812 bytes
SHA-256: 4ffaf6f842fcb0c6b0921ba835fae5c2fe515a7d00dacf83ff08996cba6db885

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