Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e23c9fe5ef9d6e3…

MALICIOUS

PDF

33.6 KB Created: 2020-05-15 13:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e54ef9b056661c4c65c35a852984a2c SHA-1: 5af6ef870f2c1f3b511838b488c4237509518c8d SHA-256: 9e23c9fe5ef9d6e3e387ee2515b21b1f57f9f35eff38f95aff0eccafb55f8795
94 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of external links pointing to various domains, a technique commonly used for SEO link farming or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. The presence of multiple PDF files with numeric slugs in their URLs suggests a coordinated effort to distribute content across different domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://lancasterec.com/uploads/1/3/0/6/130639539/130639539.html#jardinier+botaniste+formation
    • http://lmlrne.com/uploads/1/3/1/6/131606206/3669534.pdf
    • http://seawbrasil.com/uploads/1/3/1/3/131381919/fitedivovijixig.pdf
    • http://nichesplit.net/uploads/1/3/0/8/130874585/podebip.pdf
    • http://best-investmentproperties.com/uploads/1/3/0/7/130775928/26ad11.pdf
    • http://trulebrand.com/uploads/1/3/0/5/130551190/6486d3.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_off0000565c.bin
0cb13ae5eaa5695f3c85413038b87fb6dcb56af4cc1eefdcbcd2bd903ae24a1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x565C 11292 bytes

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