Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5125cce2e994d9…

MALICIOUS

PDF

45.2 KB Created: 2020-04-12 20:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 93b4156cd5ff6b1ec9da67937aaebfe6 SHA-1: d9c818062f620cb3b945b5d49f05cad736c7668c SHA-256: fc5125cce2e994d9bc7fd7d49d7aac2ddd4b631a839338caf60806dfa8558f0c
62 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, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The document body, though partially corrupted, contains the phrase 'Que es una actitud positiva' and mentions 'wkhtmltopdf', indicating it might be a lure document. The primary purpose appears to be directing users to a network of potentially malicious or SEO-abused websites.

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://richkane.biz/uploads/1/3/0/6/130604561/130604561.html#que+es+una+actitud+positiva
    • http://dronecamvision.com/uploads/1/3/1/4/131452837/vesolikuxurirojiv.pdf
    • http://southweberpta.com/uploads/1/3/0/7/130739084/zoponunulimivegu.pdf
    • http://born2organize.com/uploads/1/3/0/5/130589147/wobojidejus_midano_dededum.pdf
    • http://saintaugustinenews.com/uploads/1/3/1/4/131437622/39145.pdf
    • http://conroepressurewash.com/uploads/1/3/1/4/131437223/xamosilopijiwub_zufebe_rupeves_limavunodamudup.pdf
    • http://galalogistic.com/uploads/1/3/0/4/130478160/worubesidub-kudirarusatawa-gefuwipumeno.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d19.bin
e937d101cea51c7f5bd4c8d83d44f92f1fc53870e9d22b546d071d36959a1d02
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D19 9016 bytes
font_01_sfnt_off00009dbd.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DBD 2652 bytes