Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ba58b52e2e2bbc…

MALICIOUS

PDF

30.9 KB Created: 2020-04-07 06:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 04a08a2c3d558d36666192f93ef88e48 SHA-1: f13cd137394b5e5a3bd42825f6084248aefeaf16 SHA-256: e2ba58b52e2e2bbc787e1d48835175733b1690379270c213c40421b191ab18f6
92 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 of which point to other PDF files with numeric or descriptive slugs, indicative of a link farm. The primary heuristic firing, PDF_SEO_LINK_FARM, strongly suggests this is an SEO-based lure to drive traffic to potentially malicious content. The embedded document body text, while garbled, contains a URL that aligns with this pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://fourseasonscountryclub.net/uploads/1/3/1/4/131452836/131452836.html#i+ain%27t+gonna+work+tomorrow+youtube
    • http://the-wild-moon.com/uploads/1/3/0/4/130436018/wotozedenol.pdf
    • http://motohbexpress.com/uploads/1/3/0/2/130288707/dunemetufot.pdf
    • http://sydneycustomtiling.com/uploads/1/3/0/6/130639317/pebogak_jixox_torakadasi_nadakenux.pdf
    • http://jaredmichaelsobotka.com/uploads/1/3/0/6/130622101/8966614.pdf
    • http://churchstreetministries.biz/uploads/1/3/0/6/130604692/davinowogu.pdf
    • http://marthalou.com/uploads/1/3/1/4/131407737/velotilijorivurise.pdf
    • http://sacredpathwellness.com/uploads/1/3/0/7/130776812/b4fe728b7.pdf
    • http://renegademusic.net/uploads/1/3/1/4/131406892/11c243d7cfa.pdf
    • http://weddingbouncehouse.com/uploads/1/3/0/6/130622048/xuvegujek-pesivuw-nivisimidalobab-pikojapov.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_off00005344.bin
216674320bb47bc95a4ae82a1a080674a6dd8a0003f37467e84e465e2fa8ef36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5344 7008 bytes

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