Malicious PDF — malware analysis report

Static analysis result for SHA-256 877a014813fdfda3…

MALICIOUS

PDF

133.0 KB Created: 2020-06-10 15:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 847255ba717e770a61f959d34d8ba5ee SHA-1: 254aa239692bb1a2b1e869af2e1381b50cea32c3 SHA-256: 877a014813fdfda37c65cc8cb5926f0c93649f0fd7e2af5b0a7603e52ecee6da
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The embedded URLs and the document body, though heavily obfuscated, also contain references to these external resources. The primary goal appears to be directing users to a network of potentially malicious or compromised websites.

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://buyfrombruce.com/uploads/1/3/0/3/130324072/130324072.html#cs6+%25ED%2581%25AC%25EB%259E%2599+%25EB%25B0%25A9%25EB%25B2%2595
    • http://ardencraig.co.uk/uploads/1/3/1/3/131379828/7336062.pdf
    • http://i24.cz/uploads/1/3/0/4/130477074/muvipu.pdf
    • http://randybergremodeling.com/uploads/1/3/0/3/130323693/pukomoj_vafatelutov.pdf
    • http://storretrucking.shop/uploads/1/3/0/5/130551319/jibawumoxi-zunukiji-pejidudinevono.pdf
    • http://sethgangwer.com/uploads/1/3/0/3/130312912/4752011.pdf
    • http://davenaaron.com/uploads/1/3/1/4/131407797/lotalusapiferexejon.pdf
    • http://admin.norfolkhumanists.com/uploads/1/3/0/6/130621717/8847606.pdf
    • https://puzedewufo.files.wordpress.com/2020/06/ligububufivotibamomame.pdf
    • https://mamuxulajibi.files.wordpress.com/2020/06/sozavotoduzibobanedu.pdf
    • https://tidulijewiso.files.wordpress.com/2020/06/kopef.pdf
    • https://luwaliwev220981188.files.wordpress.com/2020/06/84733500054.pdf
    • https://loxijesuvoti.files.wordpress.com/2020/06/wabonoxa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011acd.bin
ca95d066e847859c2cc77af4602d985ccbd778bc22c805a0b97fbc58c0acae89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11ACD 67376 bytes
font_01_sfnt_off0001cb8a.bin
cf13615641f7db614d45efc6d849389f93daa9350fb6a446589a6a864e46cfe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CB8A 10736 bytes
font_02_sfnt_off0001f06d.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F06D 16204 bytes

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