Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1cae232c1621b97…

MALICIOUS

PDF

52.1 KB Created: 2020-04-16 09:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ff5de1b75f9d1c23f740282a554d5cea SHA-1: a5f9ac489aab584cfd1c175ccecbd27e6d85016a SHA-256: c1cae232c1621b976307855b71187a67e217214727828a198e6fa6c429fea61a
122 Risk Score

Malware Insights

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

The PDF file was identified as a dropper by ClamAV. Static analysis revealed a significant number of external links, indicating a link farm or SEO manipulation tactic. The embedded URLs point to various domains, suggesting a distribution mechanism for further malicious content. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8459960-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8459960-0
  • 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://andrewbroomepianist.com/uploads/1/3/1/4/131453805/131453805.html#cairbar+schutel+libros+pdf
    • http://giannanicolesheartofhope.com/uploads/1/3/0/5/130590030/kobenurep.pdf
    • http://adentaperu.com/uploads/1/3/1/6/131636733/kawolijifeben.pdf
    • http://longkieustudio.com/uploads/1/3/1/4/131438344/milamuwemuzom.pdf
    • http://healconsultation-dc.com/uploads/1/3/1/3/131398128/vogujajawafajor.pdf
    • http://j-ab.se/uploads/1/3/0/2/130273872/seromusobozixa_vakewa.pdf
    • http://seqpropertyplanners.com/uploads/1/3/0/5/130550812/7898268.pdf
    • http://tlrclassicslimited.com/uploads/1/3/0/6/130605493/9af42fc.pdf
    • http://fiddleheadgardenservices.com/uploads/1/3/0/2/130270790/paxesawevuwo.pdf
    • http://frankm.site/uploads/1/3/0/6/130639869/nilajojo.pdf
    • http://chiefmahoo.com/uploads/1/3/0/7/130739781/76c27885e4.pdf
    • http://cavecanemcolectioni.com/uploads/1/3/0/4/130488701/mekakusujubaxodix.pdf
    • http://livewellbeactive.com/uploads/1/3/0/6/130639725/b862f7.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_off00009f5d.bin
5a82998eb07bec815fd670936536435c7f92aebc2709a06f72c5776cc946682f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5D 11460 bytes

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