Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94953ef1408830c…

MALICIOUS

PDF

33.3 KB Created: 2020-06-01 01:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 858d2d52ec557b59905e798e27f96e04 SHA-1: 732996621832e71b9f516d4a534da7b1476ad3bb SHA-256: c94953ef1408830c8e9560ae8e0dac5729c2a7960dfb3134e32ca5f07ab38491
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body text and extracted URLs suggest a lure related to 'The Haunting of Hill House' PDF, directing users to potentially malicious domains like gypsyjewelsff5.com and bachelorettenash.com. No scripts were extracted, but the PDF structure itself is used to host and distribute links.

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://gypsyjewelsff5.com/uploads/1/3/0/7/130738675/130738675.html#haunting+of+hill+house+pdf
    • http://bachelorettenash.com/uploads/1/3/0/5/130589144/88790.pdf
    • http://diyapparel.org/uploads/1/3/0/6/130622041/zibusurefinaji-ratokafiwup-duwojo-kafonufov.pdf
    • http://excelerationfoundation.com/uploads/1/3/0/5/130539034/buwom.pdf
    • https://murivavuj.files.wordpress.com/2020/06/ledolagedaf.pdf
    • https://mokelim.files.wordpress.com/2020/05/83891132506.pdf
    • https://kekebig.files.wordpress.com/2020/05/taduzigan.pdf
    • https://fasojasa.files.wordpress.com/2020/05/navokokogamuk.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_off00005861.bin
b87c01f7d14607973584522ada716282ab347ee62a684bf7325acd27001584ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5861 10028 bytes

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