Malicious PDF — malware analysis report

Static analysis result for SHA-256 81a63d51100a5693…

MALICIOUS

PDF

35.1 KB Created: 2020-05-22 00:07:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4928528c3c30cc9ea2e20af8560cf290 SHA-1: 9a4da1335a119b3fd22bbf424bb190b61b977cd8 SHA-256: 81a63d51100a569338b6f9090f06c7b7d58a13b6cee0180541354389992c189a
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 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, suggesting a link farm or redirection scheme. The embedded URLs are likely used to lure users to malicious content or phishing sites. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the immediate 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://3z6.undesirable.us/uploads/1/3/0/5/130545698/130545698.html#reglas+de+hund
    • http://imperiallaundryservices.com/uploads/1/3/0/7/130738625/tuseni.pdf
    • http://soartogether2022.org/uploads/1/3/0/8/130813032/5cc6b886bb9.pdf
    • http://naturebringsmepancackes.com/uploads/1/3/0/4/130435888/dorivogube.pdf
    • http://theempoweringlives.com/uploads/1/3/0/7/130775363/sotijabemenaweguwebe.pdf
    • http://shine-bright-futures.com/uploads/1/3/0/5/130550986/kimufokavisu.pdf
    • http://dreamhomexperts.com/uploads/1/3/0/7/130775424/3680337.pdf
    • http://graceassemblyrichmond.ca/uploads/1/3/0/4/130489523/3475743.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_off00005c1c.bin
7118578cb6a167630b9450dd6650db4237136f487661c894412ed748c45284ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1C 11200 bytes

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