Malicious PDF — malware analysis report

Static analysis result for SHA-256 35fc4376178ce7c1…

MALICIOUS

PDF

43.3 KB Created: 2021-05-12 16:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b5e07f4f930ad6c2938175f0eb154e70 SHA-1: bec2709410d58d4dc1e77fed17af5e1f18cf78d7 SHA-256: 35fc4376178ce7c112ec36f708247568247990853d8fbdc995d4dab13e09105c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized links for game hacks and cheats. The document body and extracted URLs suggest a lure to trick users into visiting malicious sites, likely for phishing or malware distribution. The presence of a PDF_SEO_LINK_FARM heuristic indicates a large number of such links within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-hack-roblox-accounts-2021-game-hack
    • http://perpustakaan.fk.unila.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/get-free-coins-for-coin-master_GM406889139.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/free-games-like-coin-master_GM406889139.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/hackear-coin-master-sin-root_GM406889139.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/roblox-apk-hack_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/free-robux-now_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/get-free-coins-on-coin-master_GM406889139.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/free-robux-without-offers_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/giftrobux-com-generator_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/free-robux-obby_GM431946152.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdf
    • http://perpustakaan.fk.unila.ac.id/repository/minecraft-ps3-free-download_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004854.bin
e1dda3d35fc13e8075658a21390deb2ff39205bf1f8fc4af399ebb19c0722b94		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4854 28164 bytes
font_01_sfnt_off0000845a.bin
91904dcb98687fcf58c7b52e545a9fbf658b3e4d1998331468638ebaf1d03505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x845A 18992 bytes

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