Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5a3b9d857bb071e…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 02:15:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c93c72ba41a0d26d055ecab1c44d3654 SHA-1: d7366fe074fa5d49ca0950f60c98dc6a9349bfab SHA-256: e5a3b9d857bb071efcb7488725b774ef778f2f334d4a6586454db9782e319928
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'Roblox Hack 2021 Free In Game'. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs and the document's content strongly suggest a phishing or scam attempt.

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/roblox-hack-2021-free-in-game-game-hack In PDF document text
    • https://www.repository.ptiq.ac.id/repository/robux-hack-promo-code_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-cool-tshirt-roblox_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/oprewards-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/top-10-roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/can-you-hack-on-roblox-on-xbox-one_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/como-descargar-roblox-hack-para-pc_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-free-robux-without-downloads_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/hack-para-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/any-free-roblox-exploits-2021-reddit_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/brady2021-got-hacked-on-roblox_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_off00002edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDF 22316 bytes
SHA-256: 00c7e81533c1564af3b7cce749e5dcc6e27692224c415766d0235ffda635d310
font_01_sfnt_off00006093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6093 19480 bytes
SHA-256: 35f5eebad37fb1774c14624edbf2afac0e03b26e7a79dc5375c1114dc3fd988c

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