Malicious PDF — malware analysis report

Static analysis result for SHA-256 dac28769d6287f0b…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 18:09:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0229a361eb2462dff6afe97f0b3b4c45 SHA-1: 6c46018554800ea7e47f231a8d0cdd71d6311f70 SHA-256: dac28769d6287f0ba1b01b55257fa3868262f9d52fa1fedec19d48303bfb9dd9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, presenting itself as a 'game hack' or 'free Robux' generator. It contains a prominent link that redirects to malicious infrastructure, likely to download further malware or conduct phishing. The ML classifier strongly indicated maliciousness, and the PDF structure includes links to known malicious redirectors.

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-how-to-hack-someones-account-2021-game-hack In PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-builders-club-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/admin-command-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-jailbreak-hack-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/5-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-robux-hack-online-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-free-robux-in-meepcity-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-free-robux-test-site_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-download-for-windows-7-free_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_off00002dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBD 22652 bytes
SHA-256: 521d5452a665d940b44f56767d888f6c09a089183ef7a706e5e13d8b4d3d9230
font_01_sfnt_off0000608b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608B 19724 bytes
SHA-256: ec783e3c085639c687d3361445ca40ab71e109c64585fe8aaad5446c748aebf2

Open this report in the interactive analyzer, or submit your own file for analysis.