Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dcbddad37ef31cf…

MALICIOUS

PDF

39.8 KB Created: 2020-04-12 08:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 755d20f63b38c6653654eb1e2447ef1b SHA-1: 2988a14c54feb94302017a79ad92d6bbb4452751 SHA-256: 7dcbddad37ef31cf3ef8fbed783bbe9092004b43f0858e1864f04f0cfde6a554
62 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a heuristic firing for a large number of external links, suggesting a link farm or redirection tactic. The document body contains garbled text but also includes a URL that appears to be part of this link farm. The primary attack pattern involves luring users to external sites via these numerous links.

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://maiereducationalconsultants.com/uploads/1/3/1/4/131452935/131452935.html#norma+015+diabetes+2010
    • http://extremekids.net/uploads/1/3/0/5/130589431/2476509.pdf
    • http://bradentonfiredepartment.org/uploads/1/3/0/6/130605497/vivekuxogorezokofo.pdf
    • http://boonecountydrugpreventioncoalition.com/uploads/1/3/0/7/130776788/9317669.pdf
    • http://angelawardlaw.com/uploads/1/3/1/3/131380521/famisopesu.pdf
    • http://yellowpencilrental.com/uploads/1/3/0/7/130739090/b2fcc6f9424.pdf
    • http://primitivefarms.com/uploads/1/3/0/3/130380002/kikimiz.pdf
    • http://extremekids.net/uploads/1/3/0/5/130589431/24
    • 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_off00006f6f.bin
e677c00d5e37103b41b1651fda1fb365a99a207ba8eb0fdac2ea1783f5448519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6F 9952 bytes

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