Malicious PDF — malware analysis report

Static analysis result for SHA-256 e87985eb7eec66ec…

MALICIOUS

PDF

54.6 KB Created: 2021-05-14 14:50:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: feb1926029fb0ff806facbc0b67edbd7 SHA-1: bf27f1cd0ec529ae7d6b4876d47a99421ac09dca SHA-256: e87985eb7eec66ec656396febdc14503b9de41cfc969ad8077524d924bb8c72a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which are SEO-optimized and point to pages promising game hacks and cheats. The ML classifier also flagged this PDF as malicious. The presence of numerous external links suggests a link farm designed to redirect users to potentially malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8324

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-free-spins-generator-game-hack PDF link annotation
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004dbc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DBC 25316 bytes
SHA-256: 351fb5eb8d8dee2829e9fd79c0ad57f2c86dcab6c4634982047003766583acd9
font_01_sfnt_off000087a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A6 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00009271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9271 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA597 17884 bytes
SHA-256: 61e0f30a550a552155c2db6a7959ee396d6a34ca680bb4676c065f633eb1cbfa
font_04_sfnt_off0000c65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65B 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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