Malicious PDF — malware analysis report

Static analysis result for SHA-256 35b04137b93c10aa…

MALICIOUS

PDF

47.0 KB Created: 2021-05-13 01:10:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9749e17f2d6174ce1ab30e762ecd24e7 SHA-1: dd2ae1398ba2e774da1e4459e02291e3a3c245ed SHA-256: 35b04137b93c10aabdf22e3f1cf34205a6738e52ef161241e7a34a63b8070d3d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a call-to-action phrase, directing users to websites that appear to offer game cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or SEO poisoning tactic. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or social engineering attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-spins-coin-master-game-hack
    • http://smpn1sda.sch.id/slims/repository/hack-coin-master-for-free_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/how-do-you-earn-robux_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/free-spins-coin-master-cheats_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/roblox-piano-hack_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-buy-robux-for-free_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-hack-iphone_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/get-free-cards-in-coin-master_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/collect-free-spins-for-coin-master_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/hack-coin-master-apk-download_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/minecraft-116-apk-download_GM479516143.pdf
    • http://smpn1sda.sch.id/slims/repository/free-chest-coin-master_GM406889139.pdf
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-roblox_GM431946152.pdf
    • http://smpn1sda.sch.id/slims/repository/free-coins-coin-master-link-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004957.bin
be39c64c5944fd8d982df1d3bdebe1a207d740613f3b17e3f284607c83b8cb0c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4957 28468 bytes
font_01_sfnt_off00008a25.bin
4b5d0ffea6903a7834ca688408864ef0691755e63a6a17f5d3dd6e09616e3ddd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A25 3748 bytes
font_02_sfnt_off000096b4.bin
18816d8d761583b578c9833b8849e2eeaed27ef2f16a893d2032c58e3f8148b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96B4 17884 bytes

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