Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c36e8c8c29b22d7…

MALICIOUS

PDF

42.0 KB Created: 2020-03-16 08:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 89fb21216ed8e2d1d331cb8b148fb994 SHA-1: ce2c4ba8d173053322102c994d6ed0aeeb978605 SHA-256: 8c36e8c8c29b22d758fbcd988e2d56f444f59bacb90b7a3bab0360a720adc02a
122 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Dropper.Agent-8788295-0 further indicates malicious intent. The primary function appears to be directing users to a network of linked PDF documents hosted on various domains, likely for SEO spam or to distribute further malicious payloads.

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-8788295-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8788295-0
  • 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://www.theschaeferfamily.us/uploads/1/3/0/2/130291033/130291033.html#ipcc+guidelines+2018
    • http://springerlawfirmllc.com/uploads/1/3/0/9/130968960/dexorewamud-gatajute-loxoso.pdf
    • http://mta-sts.mx.elratontheatre.com/uploads/1/3/0/5/130550803/wusefoxexuwidup.pdf
    • http://www.runwaydollapparel.com/uploads/1/3/0/5/130550712/8518755.pdf
    • http://lindsayslittlecookingacademy.com/uploads/1/3/0/6/130621654/f4e78.pdf
    • http://mta-sts.mail.sedonaroadrunners.com/uploads/1/3/0/3/130379072/leduzafifepe-zazobefalude-somovev-tiviko.pdf
    • http://mettleheart.com/uploads/1/3/0/2/130289308/pimerena_fukapifimesewa_juforufisenake_lufegoviwomi.pdf
    • http://webdisk.joegutowski.com/uploads/1/3/0/7/130740074/1137752.pdf
    • http://howardcountymathtutors.com/uploads/1/3/0/5/130589033/sufavozopumaderilole.pdf
    • http://dorewe.com/uploads/1/3/0/5/130551745/f81ef4f3af0.pdf
    • http://www.ellenlbarber.co.uk/uploads/1/3/0/2/130287919/kojor-jasetojopa.pdf
    • http://diggingdinner.com/uploads/1/3/0/6/130620395/2327404.pdf
    • http://szetel.net/uploads/1/3/0/5/130590531/8574335bbb1c.pdf
    • http://newimagesfencing.com/uploads/1/3/0/7/130776394/19f3e0d4ae7c.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_off000079af.bin
73e0553bb2d34f7d9159da945fcdbe3cbe43c548a4672ef414daa6b96feaedc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AF 9004 bytes

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