Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4e74bd855cc1db2…

MALICIOUS

PDF

46.8 KB Created: 2021-05-13 18:01:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 70fd39913ad5dd56ee14a1a69ba8e553 SHA-1: c8ea50016da8f9cd58d5df5505d79d8e78609f63 SHA-256: e4e74bd855cc1db2120fc3b1f4b469cc7f79808a5965f06622819f6ef87e417e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and a visual download button, attempting to trick the user into downloading a malicious file. The primary URL identified, https://netcdn.xyz/app/406889139/coin-master-3.5-2-hack-game-hack, is flagged as malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-3.5-2-hack-game-hack In PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/generator-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/wurst-112-2_GM479516143.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D8 27672 bytes
SHA-256: f7005466840b4ce5649d653d841d3d3d53fd1c80a3850e946e2be699e0b34a1f
font_01_sfnt_off00008970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8970 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off0000949a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x949A 18216 bytes
SHA-256: 2ce71f06b10a700cf3f084aa68b33ab002ddef2a56e6912d95d46e88b5551211

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