Malicious PDF — malware analysis report

Static analysis result for SHA-256 c86252567631cdb0…

MALICIOUS

PDF

35.3 KB Created: 2021-06-27 02:15:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0e41bcafd77d8b5c55b773626a181d93 SHA-1: 3ae10844c107a6d70c3b9a7d99a9e84377ffb651 SHA-256: c86252567631cdb0de6af338d7c6c803033e799587505dbf50a3e32fa37f6f48
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and a visual call-to-action, directing users to a URL known to host malicious redirector infrastructure. The document body and extracted URLs suggest a lure for free in-game items, likely leading to malware download or phishing. No scripts were extracted from this sample, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/431946152/2021-000.000-free-robux-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/i-got-hacked-and-cant-play-games-now-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-stats-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-public-park-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/cheats-for-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/client-minecraft_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/half-hacker-half-guest-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-exploit-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/dragon-ball-z-final-stand-roblox-free-laevels-3_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-plane-blueprints-free_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_off000033ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33BA 22032 bytes
SHA-256: 0637f9bcadd72844f5a1d840acf8fe6619debc899989caab07da5ddc82af7173
font_01_sfnt_off00006459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6459 19184 bytes
SHA-256: 718ea318fefa2686971f55073403d329f534d5e6c2a25b2aea38d84385cb13ba

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