Malicious PDF — malware analysis report

Static analysis result for SHA-256 95eea733028defd1…

MALICIOUS

PDF

45.8 KB Created: 2021-05-11 19:35:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5c67ae87e2ebade0568e5d68ca3a149b SHA-1: d8d7fe93ab0e0bdcb9102f1c9da00427f07f64ab SHA-256: 95eea733028defd173d4bcb37de6565e7822424da686951226e5215d1819f4bd
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to host downloadable content. The presence of a 'Download Now' lure and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful files. While no scripts were directly extracted, the PDF structure and embedded links suggest a mechanism for delivering a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/download-coin-master-apk-hack-game-hack
    • https://perpustakaan.stiq-amuntai.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/apps-to-get-free-robux_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-rare-cards-for-coin-master_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-daily-link_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/www-rbx-com_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/robux_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/my-roblox-account-was-hacked_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/orewards-com-free-robux_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/stock-speed-coin-master-free-spins_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-play-roblox-for-free_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-hack-app-ios_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-gold-cards-coin-master_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/get-free-spins-on-coin-master-2021_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-golden-card-hack_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bf8.bin
5a25668a27b4e88d8630292b125abcc51cf509233b56007dd8a4200d59e5aebf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF8 24704 bytes
font_01_sfnt_off0000851a.bin
9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x851A 3124 bytes
font_02_sfnt_off00008ff9.bin
889c97ae1e8c5f6287d7e9e9a77de81d4c7f2c24e7ca8efa3945bbdf42481e01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF9 18472 bytes

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