Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4131d47c0ded640…

MALICIOUS

PDF

43.9 KB Created: 2021-05-14 23:49:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f2607c82a0d30fb9dbe6bc89d8456927 SHA-1: bfc982129fd8cab80461c1f7a594f79b24cba600 SHA-256: b4131d47c0ded640946c6812226e2689edc8a81cb3cd0bcde80272588a2e9639
100 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to a Minecraft-themed download URL. The document body also contains a call-to-action phrase and the same URL, suggesting a social engineering lure to trick the user into downloading a potentially malicious application. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/minecraft-free-download-android-apk-0.14-0-game-hack In PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/add-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/claim-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/best-roblox-hacks_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_off00004cbe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CBE 25584 bytes
SHA-256: 60f5333922cd4a87b983995357a47e3348453989198b7b26d13daeea0a9e0581
font_01_sfnt_off000086ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EA 19044 bytes
SHA-256: a5267b563baeeb74a90941775a753387a3f7a1649177b0733d928be729f6d9df

Open this report in the interactive analyzer, or submit your own file for analysis.