Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e0c685a982fcc31…

MALICIOUS

PDF

30.9 KB Created: 2020-05-30 05:19:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18c53583a1630fd8ff5a248548bd6fa4 SHA-1: 914dd4f89bffac6273070ac4239afeaa5ed0dee9 SHA-256: 8e0c685a982fcc3113a1d525111c658dda89fec6da4befbacf85f6497601a0a4
94 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous external links, many of which are numerically or generically named, suggesting a link farm or SEO spam tactic. The document body, though partially garbled, contains text related to beekeeping ('Comment fabriquer des cadres pour ruche') and the wkhtmltopdf generator, indicating a lure to potentially malicious websites. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9825

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://hplministries.org/uploads/1/3/1/1/131163851/131163851.html#comment+fabriquer+des+cadres+pour+ruche
    • http://gracielacafe.com/uploads/1/3/1/3/131379037/fowupusi-pekebujedenin-napumugusofubof-fakerutazeja.pdf
    • http://alterationsokc.com/uploads/1/3/1/4/131412181/027de1.pdf
    • http://pressurewashingsydney.com.au/uploads/1/3/0/5/130551251/ff83ac.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_off00004cde.bin
6229ac81ee24cced2c5d1c32619adc3299ab2f3ac347e25ceaae82bbeb805299		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CDE 11228 bytes

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