Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68cb2b4488b2966…

MALICIOUS

PDF

46.9 KB Created: 2020-04-21 04:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9cf05dbb4bef7f34cdee92d0e1b5d381 SHA-1: 46f0413f84c3f93fa3c5579855ab357f851d2274 SHA-256: b68cb2b4488b29669e76089e233fe7abefd3bc382be171c8f9a17042e82e1514
92 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern appears to be a link farm or redirection scheme, likely intended to drive traffic to potentially malicious sites or for SEO manipulation. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://heathersblingboutique20.com/uploads/1/3/0/9/130969980/130969980.html#bmeg+feeding+guide+for+gamefowl
    • http://jesusthemightygodministries.org/uploads/1/3/0/7/130776133/7531628.pdf
    • http://thefusioncollection.com/uploads/1/3/1/3/131380032/jitozutazigusov-jalomalud-gaxisak-xelaginanepu.pdf
    • http://leakdetection.info/uploads/1/3/0/6/130621487/4528582.pdf
    • http://tainobayshoreexcursion.com/uploads/1/3/1/0/131071176/66b5d9e.pdf
    • http://profitiimi.fi/uploads/1/3/1/3/131379844/f4b09df5b061f68.pdf
    • http://sandaharr.com/uploads/1/3/1/1/131163601/wajopomitoxoger.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d7e.bin
6b11085f8647d71d82d7d43b91d55c8aa3a3194b6d7e7f96b65b873fce89063d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7E 8620 bytes

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