Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b83a8ddc50ccda…

MALICIOUS

PDF

50.8 KB Created: 2020-04-06 09:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 644157c91eb4c8430b0d3ceac37bff9e SHA-1: a5fbe9aff78a519a584d3531888c50c2fefa095a SHA-256: b6b83a8ddc50ccda0ca7657b0a9681f364568d87ef43fe3965402d3531cf2778
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, 'Despedidas formales de correos en ingles', appears to be a lure. The primary purpose seems to be directing users to a network of websites, likely for SEO spam or to host further malicious content. 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://consciousrealignment.com/uploads/1/3/0/4/130476850/130476850.html#despedidas+formales+de+correos+en+ingles
    • http://elizabethmarpole.com/uploads/1/3/0/6/130604148/8609277.pdf
    • http://ctknampa.com/uploads/1/3/0/5/130544063/sejarudisa.pdf
    • http://aneeqarana.com/uploads/1/3/0/8/130873839/8fc0666.pdf
    • http://www.bullwarkscreens.com/uploads/1/3/1/3/131379724/8805905.pdf
    • http://sjpmedia.uk/uploads/1/3/1/3/131379552/vizaporabud_xunomebud_xedav.pdf
    • http://embroideryforfun.com/uploads/1/3/0/8/130814858/fijokeja.pdf
    • http://9f60bbd002.com/uploads/1/3/0/5/130590265/jatapa-jimekojug-poluxevewijo-nexoje.pdf
    • http://mountaintrafficcircle.com/uploads/1/3/0/8/130874066/xaxowowepuja.pdf
    • http://brownwoodhealthdepartment.com/uploads/1/3/0/2/130289171/481ddf.pdf
    • http://dream-different.com/uploads/1/3/0/7/130775690/xiwer.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_off000082ad.bin
7b5325f63775d1ee8534af4fb0699c38ef010071fad81afec6816b01c0cb5899		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82AD 9840 bytes
font_01_sfnt_off0000a5ee.bin
7fb557b7e01eaf75aaccf232dff6ea1e208126ae188e392a54dcb7f39a2fcddc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5EE 16620 bytes

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