Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c0327bb0a1f7ebc…

MALICIOUS

PDF

39.5 KB Created: 2020-03-28 13:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ff0fbfb1b81b6db6ecbb07d11ca50f19 SHA-1: 9e03076d9db0386f1a4f463ec8f9f684cdc5e3de SHA-256: 4c0327bb0a1f7ebcbca17d58c8a56943c84595097a280c2039aecd825353d94c
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is not a legitimate document. No scripts were extracted, limiting the analysis of direct payload execution.

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://kalajarvenlomakyla.fi/uploads/1/3/1/3/131398187/131398187.html#partes+de+un+protocolo+de+investigacion+unam
    • http://livewellandsimply.com/uploads/1/3/0/7/130775380/a15e05bfb191aa.pdf
    • http://heirfi.com/uploads/1/3/0/6/130621744/fezow.pdf
    • http://teachingsm.com/uploads/1/3/0/2/130273581/5f214420f225b.pdf
    • http://ballaratbabysitting.com.au/uploads/1/3/0/9/130969653/xefivube.pdf
    • http://angelsondeathrow.com/uploads/1/3/0/2/130273626/e0e7c.pdf
    • http://cupidcardgame.com/uploads/1/3/0/6/130621785/nevefajakugomuwiz.pdf
    • http://moonsana.com/uploads/1/3/0/5/130543771/jenobon.pdf
    • http://investnn.com/uploads/1/3/0/4/130493476/tudabilateg_kezowavaxaloru_gabaropiwir.pdf
    • http://cabrerahotels.net/uploads/1/3/0/6/130639468/a096b9.pdf
    • http://ellifintech.com/uploads/1/3/1/0/131069997/4269191.pdf
    • http://webmail.beautysalon73.nl/uploads/1/3/0/6/130640208/pebawus.pdf
    • http://desatascoscornella.net/uploads/1/3/0/4/130478935/gabuze_posar.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_off0000715b.bin
61c1c0a1c5b5aafd576356cf5317cf75bda7f8ef8624c9ca04b32ced2dae6373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715B 8060 bytes

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