Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e81aa5737c81023…

MALICIOUS

PDF

38.7 KB Created: 2020-03-23 09:49:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c332e2c194da57d6f238c54192ad9ed6 SHA-1: 90b4112c7db040e35dca75d28019c45ec7d269fe SHA-256: 9e81aa5737c810232b91cc76db944ed9466dc2fafdc8a46f8c02e2f9ff316d83
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 to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body contains garbled text but includes a URL that appears to be part of the link farm. The primary attack pattern involves directing users to a network of external resources, likely for SEO poisoning or to serve additional malicious payloads.

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://reussirsoninsertion.org/uploads/1/3/0/7/130740260/130740260.html#que+es+pine+cones+en+espa%C3%B1ol
    • http://mta-sts.christinebushroman.com/uploads/1/3/1/0/131070530/bf4cd9bfdaa.pdf
    • http://www.sweetleighs.net/uploads/1/3/0/7/130740553/negafazi.pdf
    • http://vfwpost612.org/uploads/1/3/0/4/130436415/577cc275.pdf
    • http://mychemicalguys.com/uploads/1/3/0/8/130814401/leninofuwufaxoler.pdf
    • http://nourishsinglemoms.org/uploads/1/3/0/7/130740092/9987735.pdf
    • http://msseven16.com/uploads/1/3/0/7/130775700/rekonoloso-tasoti-ronododajinifa-tuvisazo.pdf
    • http://www.foxfanatic.com/uploads/1/3/0/3/130313242/3114576.pdf
    • http://dive-okinawa.com/uploads/1/3/0/8/130874170/dalimex-vuvavidob-namofenilefakob-dolemukoge.pdf
    • http://adan.pt/uploads/1/3/0/5/130541733/2013460.pdf
    • http://www.smashednews.com/uploads/1/3/0/4/130476866/1954984.pdf
    • http://flamencomontreal.com/uploads/1/3/0/3/130323113/864d34d91fac3f.pdf
    • http://lpotravelservices.com/uploads/1/3/0/4/130489650/5588101.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_off00006a4c.bin
d3df17983f1b86eca14fa28e676d3b8023708a64aa199e38a3292de096dac949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4C 9248 bytes

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