Malicious PDF — malware analysis report

Static analysis result for SHA-256 540773e86d547eaa…

MALICIOUS

PDF

38.5 KB Created: 2020-03-22 07:50:21 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 95c095eb89a82a29949f152a4e900c65 SHA-1: a86b2f418d6d75e7a40f5f3befcbe2ef3f2553f7 SHA-256: 540773e86d547eaa5b4840e89f2f6ff2c53d9d102c977d982d9c85f7f4058592
62 Risk Score

Malware Insights

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

The PDF document contains a lure related to installing fonts on a Mac, but its primary function is to act as a link farm. It embeds numerous external links, predominantly pointing to other PDF files hosted on various domains. This technique is often used to distribute malware or lead users to phishing sites. No scripts were extracted, and the document body was heavily obfuscated, limiting deeper analysis of the immediate payload.

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://reasonablewrestling.com/uploads/1/3/0/3/130323642/130323642.html#instalar+nueva+fuente+en+word+mac
    • http://beempoweredinspired.com/uploads/1/3/0/5/130589198/napuputuvejow-wimeni.pdf
    • http://athomedogeuthanasia.com/uploads/1/3/0/5/130539763/zofadu.pdf
    • http://randomactsofpasta.com/uploads/1/3/0/6/130639306/2070163.pdf
    • http://lookgreatnakedatanyage.com/uploads/1/3/0/5/130551491/460318.pdf
    • http://leaderkast.com/uploads/1/3/0/2/130273845/8672434.pdf
    • http://mycityadd.com/uploads/1/3/0/7/130775593/62cf929f0d70d76.pdf
    • http://www.jennaraeacu.com/uploads/1/3/0/6/130604742/gitevalokupakuside.pdf
    • http://lukedraywildlife.co.uk/uploads/1/3/0/5/130551920/votake.pdf
    • http://darwinanddavinci.com/uploads/1/3/0/9/130969381/kazuxif-taseme-jozujazokosalu-zuduk.pdf
    • http://help4heart.com/uploads/1/3/0/2/130289763/9504409.pdf
    • http://fallentravelers.com/uploads/1/3/0/6/130621852/xulugomidofa.pdf
    • http://www.worldwisdomgatherings.com/uploads/1/3/0/6/130621068/03766.pdf
    • http://newagevalue.com/uploads/1/3/0/4/130476348/dupasevi.pdf
    • http://www.guardianavsec.com/uploads/1/3/0/3/130323403/vogox_leduwuzogoto_tarafelulaw.pdf
    • http://www.remiemichelleclarke.com/uploads/1/3/0/9/130969370/mizijexozelujuf_gevut_ruwiwezupidevur.pdf
    • http://www.chevalchaman.com/uploads/1/3/0/5/130589158/3265515.pdf
    • http://www.websitetest.st-er.nl/uploads/1/3/0/7/130739661/0a5a0e.pdf
    • http://elkhorn45.org/uploads/1/3/0/4/130488398/ce45f20f5.pdf
    • http://redbolero.com/uploads/1/3/0/3/130323207/sozizigow-xajele.pdf
    • http://theliquidco.com/uploads/1/3/0/7/130739897/kapol-sapogipem-zijixo.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_off00006e30.bin
10dc546716eff894a62ccf13404c9a1bb69c90b423356708dbfc5da59a3b6191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E30 8200 bytes

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