Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b062f5b94f264c9…

MALICIOUS

PDF

47.2 KB Created: 2020-06-14 12:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 065db70489e5c24f8ddd426eb4eeaaf5 SHA-1: 820b4aae55710bec6fc6eb5693d0b92f3cc07c7f SHA-256: 2b062f5b94f264c9bed221ea409a898e84e3df40b3f3d1aea8c6876b257b88cc
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to domains that appear to be part of a link farm for SEO purposes. The ML classifier strongly indicates maliciousness. The presence of numerous external links suggests a lure to either a phishing site or a site hosting further malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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://albagioielli.com/uploads/1/3/0/9/130969375/130969375.html#a+guide+to+expert+systems+waterman
    • http://mx.orindapoise.org/uploads/1/3/1/4/131438898/2017569.pdf
    • http://rubyadmissions.com/uploads/1/3/0/4/130489776/gadozat_dopibok.pdf
    • http://jotography.net/uploads/1/3/0/5/130551021/kodabuwamotupe.pdf
    • http://east-sales.com/uploads/1/3/0/7/130739080/dc8097548.pdf
    • http://atlagit.com/uploads/1/3/0/5/130552073/dukowuz-gepawomodex-xowom-lazakivade.pdf
    • https://vivixuzu.files.wordpress.com/2020/06/46733226911.pdf
    • https://zajifikaviku.files.wordpress.com/2020/06/60182864221.pdf
    • https://vigafekiwi.files.wordpress.com/2020/06/17943149888.pdf
    • https://denilag.files.wordpress.com/2020/06/rijolotegarixetoluzoma.pdf
    • https://pilelebomu.files.wordpress.com/2020/06/bonetuxunonaroxosoxawaz.pdf
    • https://nusovegot.files.wordpress.com/2020/06/29147717858.pdf
    • https://nagimogiz.files.wordpress.com/2020/06/doxigejemukaxibiso.pdf
    • https://gexotid137599831.files.wordpress.com/2020/06/45017284714.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_off00008a67.bin
a232519cfad7b53318a524ec00dc048382bd7b810edcf9f0f27f6002b7e2387a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A67 12152 bytes

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