Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ef1e2117e53250…

MALICIOUS

PDF

103.7 KB Created: 2020-05-30 11:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b8489d9a58aaee01505cdb28871bb90 SHA-1: 66dbe39cd265e7553c2a9b18bfe4e8dfb2d2ac7e SHA-256: 97ef1e2117e53250e1cc28a47951ed64ddbfa1b26e4a20b1def9ec8ee0aa08be
62 Risk Score

Malware Insights

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

The PDF file contains multiple external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. One of these links, http://stevestiling.com/uploads/1/3/0/5/130589009/130589009.html#pregnancy+and+postpartum+thyroid+management+guidelines, is embedded within the document's text, suggesting a social engineering lure. The presence of numerous external links indicates an attempt to redirect the user to potentially malicious content.

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://stevestiling.com/uploads/1/3/0/5/130589009/130589009.html#pregnancy+and+postpartum+thyroid+management+guidelines
    • http://548media.com/uploads/1/3/1/4/131453393/1615256.pdf
    • http://cheapprintuk.com/uploads/1/3/0/2/130288412/7580555.pdf
    • http://athensinfosec.com/uploads/1/3/0/2/130287500/3426933.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_off00016e82.bin
a3610fa4ab19b3e20314d43aa2fe71d39c048d1a72b53ae94b520a5ac5e0805b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16E82 10696 bytes

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