Malicious PDF — malware analysis report

Static analysis result for SHA-256 20bc4686dee76790…

MALICIOUS

PDF

61.8 KB Created: 2020-04-15 22:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c37037fe133d5968589edbbe6c509fac SHA-1: 1e8df46da8365a982fa958b8b3889919e42f9b6c SHA-256: 20bc4686dee76790e785d463c1a28f85dfbef8a5a8b7aa29dcb64efa69220952
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to similarly structured URLs on different domains. This behavior is indicative of a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the presence of numerous external links suggests a delivery mechanism for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maharichtrading.net/uploads/1/3/0/3/130379170/130379170.html#scrabble+apple+instructions+pdf
    • http://stereokitchenrocks.com/uploads/1/3/0/5/130543170/jivosawidenasavopo.pdf
    • http://researchsurf.org/uploads/1/3/0/5/130539825/sagotofifanuz_zafozix_vizoxizon_jujureludepox.pdf
    • http://michaeldylanferrara.com/uploads/1/3/1/6/131606066/pekiwekatig_fewiro.pdf
    • http://varush.org/uploads/1/3/0/6/130621072/dapexulejen_muwobin_pezonagof_xogigebiku.pdf
    • http://emilygruger.com/uploads/1/3/0/7/130738661/gunoridofobej.pdf
    • http://dppersonaltraining.com/uploads/1/3/1/4/131438819/4249608.pdf
    • http://almuspublications.com/uploads/1/3/0/3/130379959/2da06f4c93289a9.pdf
    • http://venatious.com/uploads/1/3/0/9/130969322/6109057.pdf
    • http://madeinnola.org/uploads/1/3/0/8/130814630/9f5257f8f4.pdf
    • http://dominiquejoy.com/uploads/1/3/1/4/131406930/6206239.pdf
    • http://encountered.tv/uploads/1/3/1/4/131406436/42ca7730.pdf
    • http://stereokitchenrocks.com/uploads/1/
    • 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_off0000c8c3.bin
4e50ec43bd67d0d8b323221034e188738d9a62b7e341aae844660cda2bc7b98d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C3 9000 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.