Malicious PDF — malware analysis report

Static analysis result for SHA-256 e516276a70a7267a…

MALICIOUS

PDF

39.8 KB Created: 2020-05-16 16:48:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f2f13e21259c7fe11a368ca43b5a7e3 SHA-1: 814393be5cd7043449ee639d2a66871b90155055 SHA-256: e516276a70a7267a6316009643e09c739480cf895530dfadcbf8a8752a576c7d
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm designed to manipulate search engine results. The document body contains text related to 'checkbook balance template excel', suggesting a lure to attract users searching for financial templates. The primary intent appears to be directing users to a network of SEO-optimized PDF files, likely to host further malicious content or engage in search engine poisoning.

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://starsinthemaking.org/uploads/1/3/1/4/131437612/131437612.html#checkbook+balance+template+excel
    • http://menoqunubu.com/uploads/1/3/1/4/131411762/vawuwavimomusasew.pdf
    • http://starktaylor.com/uploads/1/3/0/2/130289252/0dac629.pdf
    • http://alfredagerald.com/uploads/1/3/0/8/130874570/175b833.pdf
    • http://foolproofclothing.com/uploads/1/3/0/6/130639474/noteno.pdf
    • http://newmapsoftheoldwest.com/uploads/1/3/0/6/130605406/5264542.pdf
    • http://networkinhopkins.com/uploads/1/3/1/4/131408033/xadalegobod_bufefopuse.pdf
    • http://yalaavenue.com/uploads/1/3/1/4/131437307/2807694.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cd7.bin
df0ace7a4665613877b7f6dffe5209f17884f318f3dc3d55ad1b012fe3c3ff45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD7 9000 bytes
font_01_sfnt_off00006ef3.bin
d4fcd54fcd1341f94779a254694ed6329a462a819907091a603f8bd440b32665		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF3 10816 bytes

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