Malicious PDF — malware analysis report

Static analysis result for SHA-256 f897583cf83cfba5…

MALICIOUS

PDF

35.6 KB Created: 2020-03-31 00:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 49830ea9e589938c13df47d8cf20ec9f SHA-1: 548212642f0271d31dca7f97c0e39e9006266d84 SHA-256: f897583cf83cfba5694e981f239e2d81b600baa3c54f801634dda9957af7e77e
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many pointing to other PDF files, suggesting a link farm or redirection mechanism. One of the embedded URLs, 'http://sarahsimmonssings.com/uploads/1/3/0/8/130814718/130814718.html#niveles+de+pensamiento+de+norman+webb+verbos', appears to be a lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'lftgentiles.org' being a dominant host, suggesting a coordinated effort to distribute malicious content or traffic. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure-based attack pattern.

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 http://sarahsimmonssings.com/uploads/1/3/0/8/130814718/130814718.html#niveles+de+pensamiento+de+norman+webb+verbos
    • http://lftgentiles.org/uploads/1/3/0/7/130738543/wexiwi_kefixafikokilu_fusitisok.pdf
    • http://wolflaurelrealestate.com/uploads/1/3/0/6/130605124/jozojuweko.pdf
    • http://ashlandunitplansethream.com/uploads/1/3/0/7/130775588/gokun.pdf
    • http://kellysandau.com/uploads/1/3/0/4/130476332/gilumipodalixaze.pdf
    • http://pacopioneervalley.org/uploads/1/3/1/0/131069923/5182053.pdf
    • http://thetraced.com/uploads/1/3/0/5/130588307/wuvadawetumut.pdf
    • http://natashabeautiful.com/uploads/1/3/0/2/130289565/ponax-nebebelovavu.pdf
    • http://autenticocaffe.com/uploads/1/3/1/0/131071286/jemuralavaxis.pdf
    • http://annkellettediting.com/uploads/1/3/0/6/130620645/1a3112f.pdf
    • http://dandldistributing.com/uploads/1/3/0/6/130605349/64912426.pdf
    • http://manifestyourlegend.com/uploads/1/3/1/0/131070027/9316449.pdf
    • http://theglambarleeds.com/uploads/1/3/0/5/130550664/4982425.pdf
    • http://lrodarte.com/uploads/1/3/0/7/130775871/lijebexenaluwez-jikasow-xarigamane-nawise.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006125.bin
9479fc4454609f0df8bb08cf356a4f6ba4fa067bb1dafb144403ad25643118b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6125 9044 bytes

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