Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc3e891a287255a…

MALICIOUS

PDF

75.7 KB Created: 2020-03-30 10:02:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b35337dafc2bfaa3d6ed8f0ec9a92083 SHA-1: 00902683e4716394fea52669ef6afb18640a9cb4 SHA-256: 8cc3e891a287255a571113e81be12e180d43dcc4ee8650949fa9fd3a4f3ad637
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 ML classifier also strongly indicated maliciousness. The primary attack pattern involves directing users to a network of linked PDF documents hosted on various domains, likely for SEO spam or to distribute further malicious content. No scripts were extracted, and the document body was heavily obfuscated and truncated, preventing a deeper analysis of its specific intent beyond link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://myannuityguru.com/uploads/1/3/0/4/130435959/130435959.html#d
    • http://lacourdesmiracles.eu/uploads/1/3/0/6/130620439/4577834.pdf
    • http://emporio25.com/uploads/1/3/0/5/130589044/rezago_tidanenejug_zisopapulawitix.pdf
    • http://3rdblobeatz.com/uploads/1/3/0/7/130775916/4529154.pdf
    • http://cooperdiscoveries.com/uploads/1/3/0/6/130620436/safuzotutamalo.pdf
    • http://mieldercarelaw.com/uploads/1/3/0/4/130475932/4033022.pdf
    • http://binoracle.com/uploads/1/3/0/6/130621333/966181bdbcea7.pdf
    • http://emilyvulcano.com/uploads/1/3/0/4/130436125/8f8a1.pdf
    • http://marinautomotive.com/uploads/1/3/0/4/130436261/maguk.pdf
    • http://74-123-72-115.mgwnet.com/uploads/1/3/0/5/130546538/ropufutin.pdf
    • http://mrspiacentini.com/uploads/1/3/0/4/130489343/7642372.pdf
    • http://tlswindsled.com/uploads/1/3/1/1/131163834/muxigirulu-bojote-wivuwifelij-bigaso.pdf
    • http://hengone.com/uploads/1/3/0/5/130545884/fawedajumofop_sipunuwiparolu_kuvadepa_patelipa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9a1.bin
271399dd5d502a8a451999b67b194368a75b4e429e5d4cfa1ebb617cc0095e04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A1 11264 bytes
font_01_sfnt_off00010117.bin
519dbf51635d4e16501a3acbf84993e0d717848e01bbdbed370cc7db0fb9a6a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10117 2780 bytes
font_02_sfnt_off00010af4.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF4 16036 bytes

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