Malicious PDF — malware analysis report

Static analysis result for SHA-256 21a8229f88ee688b…

MALICIOUS

PDF

37.1 KB Created: 2021-05-24 00:04:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9a1cbd802fe72776592eba0700cd986a SHA-1: e0596edf4c47f9dc6a0c6f72fadc29c20c3fdde5 SHA-256: 21a8229f88ee688ba3937d0f33369923311553608b9177e12847e32bbd99c635
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links to known malicious redirector infrastructure, specifically pointing to a lure about hacking Roblox accounts. The document body also contains similar lures and a call-to-action phrase, reinforcing the phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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 https://netcdn.xyz/app/431946152/how-to-hack-someone In PDF document text
    • http://getthelook-bkk.com/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://getthelook-bkk.com/images/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://getthelook-bkk.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://getthelook-bkk.com/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://getthelook-bkk.com/images/how-to-send-free-spins-on-coin-master_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_off0000346b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x346B 25240 bytes
SHA-256: b260ab38806fc3db9cc33191c31a9865f78d5d5fd402757c79bd0828e77eec50
font_01_sfnt_off00006dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD9 18912 bytes
SHA-256: 995056b981027bfba3f97be2499ebace8b386febdb07856c531761fbe005e83e

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