Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae299bf48e9ae90…

MALICIOUS

PDF

45.2 KB Created: 2021-06-08 13:42:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 08f6acd9818634f67c5a704b24002a99 SHA-1: aca7448cd90bbc360830ae5518cd4d51c3d55776 SHA-256: eae299bf48e9ae900c144712c6241aad85e0e077d336d9e306227405e29f50f8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, identified as a PDF link farm, suggesting a tactic to manipulate search engine results or redirect users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the link farm heuristic strongly indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/roblox-bloxburg-building-hacks-game-hack
    • https://perpustakaan.stifar.ac.id/repository/free-pet-food-on-coin-master_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/free-google-play-promo-codes-coin-master_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/is-minecraft-free-on-xbox_GM479516143.pdf
    • https://perpustakaan.stifar.ac.id/repository/mcpe-free-download_GM479516143.pdf
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-gold-cards-hack_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-pc-hack_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/free-robux-promo-codes_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/free-spins-on-coin-master_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-and-spin-link_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-with-lucky-patcher_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/minecraft-education-edition-free-download_GM479516143.pdf
    • https://perpustakaan.stifar.ac.id/repository/robux-free-gift-card_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/how-to-hack-coin-master-pc_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/how-to-hack-coin-master-apple_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/master-coin-hack-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fd7.bin
2ef6f6db0c2bed4f149c6df85eaf717023d8e4ef662bc730cf45d490548b0c4e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD7 27356 bytes
font_01_sfnt_off00008c5e.bin
8ddf9e2f61822f2abbe6469675b041f97d1d73bb460d7f98dfa4063b5df50863		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5E 18904 bytes

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