Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a3fb28194404942…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 05:03:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 15bb090a1bc4cde045e7d3633f396a42 SHA-1: e427500bf3e44b93263518e8466b27142f48e0a7 SHA-256: 1a3fb2819440494238fb0946a6fe9693c3873d66750eb79c1e15cb34575af418
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and text that lure users with promises of free games and in-game currency, directing them to malicious infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags the primary URL as leading to known malicious redirector infrastructure. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs suggest a phishing or malware distribution attempt.

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/free-games-online-on-roblox.com-game-hack In PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00003098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3098 22312 bytes
SHA-256: 7f85b7fab85f44803c103ab2096c2bf76ee753f8842137395326a996e294d119
font_01_sfnt_off00006216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6216 19096 bytes
SHA-256: 1022e516b45e5398029bb47c6b6c75cce8f716d34d5d3b9b54578f28773fa4ba

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