Malicious PDF — malware analysis report

Static analysis result for SHA-256 c85c8ef25a482bd5…

MALICIOUS

PDF

40.2 KB Created: 2020-04-06 04:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 81913ae825ab65d6444e4689e203dbda SHA-1: 04d857c2482c7ebbe734a43b0ec25fe9a21da738 SHA-256: c85c8ef25a482bd504b1f7f27e8ac034f21c459a534633bb6d72f4139573b819
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links point to various PDF files hosted on different domains, suggesting a coordinated effort to manipulate search engine results or distribute content. One of the embedded URLs is http://ewa-10.com/uploads/1/3/1/3/131382539/131382539.html#keurig+k45+elite+cleaning+instructions, which appears to be a lure. The primary purpose seems to be directing users to these external resources, potentially for malicious purposes.

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://ewa-10.com/uploads/1/3/1/3/131382539/131382539.html#keurig+k45+elite+cleaning+instructions
    • http://iominterexport.com/uploads/1/3/1/4/131453288/e7dfb11e46.pdf
    • http://vhcministry.org/uploads/1/3/0/2/130288722/3107045.pdf
    • http://eschatography.com/uploads/1/3/0/6/130620836/jizorirari_siruvoxize.pdf
    • http://westcoastescrrow.com/uploads/1/3/0/3/130313155/8950792.pdf
    • http://freshcleanonfranklin.com/uploads/1/3/0/7/130776676/904684.pdf
    • http://olympiapaving.com/uploads/1/3/0/4/130435939/be3a404230689a.pdf
    • http://loveaverage.com/uploads/1/3/0/8/130814633/zetewexid_lunigafiba_filabu.pdf
    • http://roofingcompanydentontx.com/uploads/1/3/0/5/130539990/6269284.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_off00007468.bin
1745016ca065426c0320ab93698596faf7dc9b64874f8057696e34e200b33781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7468 8200 bytes

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