Malicious PDF — malware analysis report

Static analysis result for SHA-256 87b53d7b25716547…

MALICIOUS

PDF

38.5 KB Created: 2020-06-18 04:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9022baf2958bf4d21672a29180b80208 SHA-1: 475de95c66f28962f42b1f3aa7b3edc93a12152c SHA-256: 87b53d7b25716547dc78fcdc68b594253c99433a00b69ad3df2dbc82a43bc21b
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, also contains several of these URLs. This suggests the primary purpose is to redirect users to external sites, potentially for SEO manipulation or to serve as a distribution point for further malicious content. 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://fearlesjourney.com/uploads/1/3/2/6/132683330/132683330.html#catia+cam+tutorial
    • http://q1.undesirable.us/uploads/1/3/1/3/131379060/2741250.pdf
    • http://starkfitnessandrunning.com/uploads/1/3/0/7/130738819/pekipori.pdf
    • http://paulhannahestateagents.com/uploads/1/3/1/1/131163931/63fe8e08b4ca7.pdf
    • http://whitehallstoneworks.com/uploads/1/3/0/2/130272452/bedofazalazubokiva.pdf
    • http://openparadigma.org/uploads/1/3/0/5/130590507/govelexedufa_loguvuz_sajobabexeledes.pdf
    • http://gfoxinc.com/uploads/1/3/0/6/130604279/3ba30.pdf
    • http://simonjohns.co.uk/uploads/1/3/0/6/130603859/wubabutavupira.pdf
    • http://mail.sebolt.com/uploads/1/3/0/2/130288394/3555908.pdf
    • http://mariettasquarefarmersmarket.net/uploads/1/3/1/6/131606335/kazajidafarawaka.pdf
    • http://demasidomestic.com/uploads/1/3/0/6/130604850/2863cfd0.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_off00005c4f.bin
46cf41086a0c1029fbe4be73b81d1cb1353a9c69a6eddef9daa41d68e22f3295		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4F 4448 bytes
font_01_sfnt_off00006b67.bin
d3a98e71018e6d9c3919b0e22ed41b84d78cc69ede312268eb5ca5f06bca24f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B67 10260 bytes

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