Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b74cb6ebca3f27…

MALICIOUS

PDF

41.8 KB Created: 2020-06-09 07:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a42fb611b59ca4782ca1a68fa503064 SHA-1: 398abb8dea599cbef34f13a245f1cce533f33e16 SHA-256: e3b74cb6ebca3f27d8b83435f785b388ea2b4f7b3b61644fe46987e261534560
62 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, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm designed to manipulate search engine results or host malicious content. The document body is heavily obfuscated but contains references to these URLs. No scripts were extracted from this sample.

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://totallydreams.com/uploads/1/3/0/2/130271206/130271206.html#dunk+tank+%25D8%25A5%25D9%258A%25D8%25AC%25D8%25A7%25D8%25B1+%25D8%25B3%25D8%25A7%25D9%2586+%25D8%25AF%25D9%258A%25D9%258A%25D8%25BA%25D9%2588
    • http://hotelimpaportugal.com/uploads/1/3/0/5/130547812/4305221.pdf
    • http://strategicmeetingtechpodcast.com/uploads/1/3/0/6/130639311/252e275d6d25f3.pdf
    • http://liamjordan.co.uk/uploads/1/3/0/9/130969465/jowubipufa-mepas-kenozitenirid-mivos.pdf
    • http://ns1.rachelkodner.com/uploads/1/3/0/7/130775871/bekog-libemaxuk-bitage.pdf
    • https://vojunedipobe.files.wordpress.com/2020/06/84784401382.pdf
    • https://runokuxuzeni.files.wordpress.com/2020/06/82989493943.pdf
    • https://zolibuvove523289473.files.wordpress.com/2020/06/69830466088.pdf
    • https://moraxokeka.files.wordpress.com/2020/06/8981245750.pdf
    • https://wupogoxaxiwu.files.wordpress.com/2020/06/zisewifarofadezipupek.pdf
    • https://xasarev.files.wordpress.com/2020/06/vifuziviragivax.pdf
    • https://tosukovexe.files.wordpress.com/2020/06/43238950670.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bdf.bin
5499b9cb68af418ef95f74851c1057122e1c84d5a4d981f420a3f308d12f52ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDF 10668 bytes
font_01_sfnt_off00008080.bin
8fd5d34f8209aa1f85059ca13a6c6aeb8efa276b0710a295552595e91d590936		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8080 17284 bytes

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