Malicious PDF — malware analysis report

Static analysis result for SHA-256 2230c53b6e73f4ca…

MALICIOUS

PDF

30.4 KB Created: 2020-06-08 17:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abf642f9744b270db02e3618fae2ace6 SHA-1: dd7b10dbe4b3608c423d2e3a2cc68af3831850d1 SHA-256: 2230c53b6e73f4ca71e92a53dfa0a2f4f5907c0b6fe7246e3744e8374d5c9cf2
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, identified by the PDF_SEO_LINK_FARM heuristic. The document body also contains several URLs pointing to external PDF files. These links are likely intended to manipulate search engine rankings or to serve as a distribution point for further malicious activity. The ML_NYX_PDF_MALICIOUS heuristic strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jolenes-fashions.com/uploads/1/3/0/5/130589171/130589171.html#fayette+county+spring+break
    • http://summerhillcap.com/uploads/1/3/0/4/130488288/xanul.pdf
    • http://shivadream.net/uploads/1/3/0/2/130287965/wudugoz.pdf
    • http://okenergyfc.com/uploads/1/3/0/5/130588428/420ab3.pdf
    • https://riwudixaxu.files.wordpress.com/2020/06/30030041075.pdf
    • https://jefunalas.files.wordpress.com/2020/06/48167243732.pdf
    • https://xexudojak.files.wordpress.com/2020/06/75860168607.pdf
    • https://gorajeg.files.wordpress.com/2020/06/wuvuvumagugazoweb.pdf
    • https://dataxaju.files.wordpress.com/2020/06/83932023692.pdf
    • https://gomubefibi.files.wordpress.com/2020/06/19410697683.pdf
    • https://lewarakorin.files.wordpress.com/2020/06/94346791465.pdf
    • https://diwilawewev.files.wordpress.com/2020/06/254207320.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_off00004de0.bin
702e45eaa0effd578d9f4444a2086fde53046efb18e60fd39db1d0b8392a3fdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DE0 9588 bytes

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