Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cee2506e128df26…

MALICIOUS

PDF

42.2 KB Created: 2021-05-17 01:40:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c63793ee2db8baa9943fce073bc136e0 SHA-1: 309b9a8e384e2f659a0d00ba2212cdbfb280dc03 SHA-256: 4cee2506e128df26d03daabf8960e66215b02f3facde5a4e1ff13a2c5966c2c5
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links and a visual call-to-action, strongly suggesting a lure to download external content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that at least one of the embedded URLs points to known malicious infrastructure. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/hack-coin-master-apk-3.5.8-game-hack In PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-robux_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-premium-roblox_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
stream_003_off0000490f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490F 24616 bytes
SHA-256: 38ec04d17ccbb82985be52e23ce8f20462c87ced85abd04190123f7bf1df8f88
font_01_sfnt_off000081af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AF 18476 bytes
SHA-256: ef1620938bbb1753b3b5074b9666c4de949f8bba958194232ab61b8971eea6d9

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