Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e6c36158728ddb3…

MALICIOUS

PDF

40.0 KB Created: 2020-05-29 07:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6907b8491b67300c190bfdf968f81780 SHA-1: f1967e3cc04dd773790da3b85815a01a885313f2 SHA-256: 1e6c36158728ddb36ac14272490e5c6f4fa86d19b457b2c1abcc4e768248061f
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted on various domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, also contains several of these URLs. This suggests a link farm or redirection scheme, likely intended to distribute malicious content or engage in SEO spam. 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://8qkosj.brdge.org/uploads/1/3/0/5/130590334/130590334.html#recetas+mycook+martin+berasategui+pdf
    • http://handymantooele.com/uploads/1/3/1/4/131438556/86f72cf1f786937.pdf
    • http://spencer-amaral.com/uploads/1/3/0/6/130640092/4251792.pdf
    • http://gastoncp.com/uploads/1/3/1/4/131437742/pigipufegetavukuf.pdf
    • http://mail.intrinsology.com/uploads/1/3/0/6/130639329/juseketogepog-burutu.pdf
    • http://newcastlecountyreview.com/uploads/1/3/1/0/131069870/surusemow.pdf
    • http://hostmaster.katewesterlund.com/uploads/1/3/1/4/131452753/6271573.pdf
    • http://alforno.org/uploads/1/3/0/5/130588291/1977416.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_off000058d8.bin
c847d57cd8bd6020872ab58c56ca30eb1380581df5ca310f871df4bd4de6e11a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D8 11268 bytes
font_01_sfnt_off00007dab.bin
028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAB 16312 bytes

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