Malicious PDF — malware analysis report

Static analysis result for SHA-256 b019afbc5c8b0f0d…

MALICIOUS

PDF

32.2 KB Created: 2020-05-17 02:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a86f8928a82357ecf9a734537b66b808 SHA-1: 87fe78797735fe0ee2bc874010c9f0cef2278670 SHA-256: b019afbc5c8b0f0d42524003258bdc2c6fc4130c4fdb5e84d98cb2c2693ed424
92 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links predominantly point to domains with numeric or generic slugs, suggesting a link farm or SEO manipulation tactic. The primary external URI found is http://sixtarubio.com/uploads/1/3/0/7/130775797/130775797.html#coliformes+totais+termotolerantes+e+escherichia+coli, which is likely part of this network. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://sixtarubio.com/uploads/1/3/0/7/130775797/130775797.html#coliformes+totais+termotolerantes+e+escherichia+coli
    • http://pagedesignkc.com/uploads/1/3/0/5/130590432/vunatanafusi_kuvufaguw_kamuf_fewepugoj.pdf
    • http://nycsuvlimo.com/uploads/1/3/1/8/131871607/4acb8d7fdf11.pdf
    • http://hayforkstorage.com/uploads/1/3/1/6/131637177/0caaca4320.pdf
    • http://yasminleila.com/uploads/1/3/1/6/131637177/fegurariguxa.pdf
    • http://talordfrench.com/uploads/1/3/0/5/130552097/9450271.pdf
    • http://joythroughtoys.org/uploads/1/3/1/4/131438056/8825915.pdf
    • http://elizabethdanielledufrene.com/uploads/1/3/0/8/130874086/f576e3a1a.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_off000050c6.bin
45e2d85fdaee73efe4dedcf37e9e6124fe8997a5695ef87e11fb2cbd444fc468		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50C6 12264 bytes

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