Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4363fc86f5c068…

MALICIOUS

PDF

34.5 KB Created: 2020-06-03 02:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c9d3eaa8fe458304369716ce4d50861 SHA-1: fc97a2bd02006ef14aaac5ad19ce7647102064d2 SHA-256: eb4363fc86f5c068eb2cd157b7b8233c2e2ee1a962cedd4e29535eff0243b094
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, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also flagged the PDF as malicious with high confidence. The document body contains garbled text but includes the URL http://harperhill.farm/uploads/1/3/1/4/131452883/131452883.html#iowa+trust+code, which is also listed as an external URI. This suggests a link farm or phishing attempt.

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://harperhill.farm/uploads/1/3/1/4/131452883/131452883.html#iowa+trust+code
    • http://yinspiringyoga.com/uploads/1/3/0/6/130620811/posuva_fidepobuvijulo.pdf
    • http://jmichaelsjewelers.com/uploads/1/3/0/4/130489475/zalemumitosafi.pdf
    • http://dorsetponds.com/uploads/1/3/0/5/130551639/ee832d7f20.pdf
    • http://duvaldirectory.com/uploads/1/3/0/6/130639877/javakedimisedate.pdf
    • http://harperhill.farm/uploads/1/3/1/4/131452883/terms.html
    • http://harperhill.farm/uploads/1/3/1/4/131452883/dmca.html
    • http://harperhill.farm/uploads/1/3/1/4/131452883/policy.html
    • https://rejosejel.files.wordpress.com/2020/05/63419731722.pdf
    • https://detomanuz.files.wordpress.com/2020/05/kusimadinedebisujedaw.pdf
    • https://zefafegepidi.files.wordpress.com/2020/05/tonakaxubalo.pdf
    • https://pabozig.files.wordpress.com/2020/05/29000946828.pdf
    • https://fujipoveju.files.wordpress.com/2020/06/12611022946.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_off00005bad.bin
d0bfb76caabfc04dbe492a8ab1e421fc7715d6bae04d57b1f265a8235aa91601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAD 9844 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.