Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b2748d1671ff8d…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 23:48:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b1ec385fd988351311e93e729280a7f SHA-1: d597dce40762bd432d3eac7da65911627a1291a6 SHA-256: 64b2748d1671ff8dc5349f6d8a7c587a6b51b45a4f25bb6a704393b7f1730b32
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs that lead to sites offering hacks or free items for games, and one URL is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body and embedded URLs suggest a lure to download applications or exploit kits related to game cheating.

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/androidp1.com-hack-robux-game-hack In PDF document text
    • http://repository.ummy.ac.id//repository/pubg-uc-buy-free_GM1330123889.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/pubg-10-000-uc-free_GM1330123889.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-pants-on-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/howe-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-login-to-cerberus-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/rbx-claim_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-get-free-robux-on-robuxy-com_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/howto-get-free-robux-hack-javascript_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-robux-generator-club_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-free-rubux-hack_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/tiktok-free-pro-app-download_GM835599320.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/gold-card-coin-master-free_GM406889139.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_off00002e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E24 21936 bytes
SHA-256: 89da8ba29c9a8e344366830dd22e9c19ceaa1dff66d9b675fe5223092aa03bc2
font_01_sfnt_off00005e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7E 19624 bytes
SHA-256: c4eed505c8456556874ba5cafaa8a8a5c6a0c32d2e20b4a67b2fff1904f8f848

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