Malicious PDF — malware analysis report

Static analysis result for SHA-256 f284c0d20d584569…

MALICIOUS

PDF

51.1 KB Created: 2020-04-27 19:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 08ede997df0024032c71fe9b2ce74457 SHA-1: cc75f09e35962bcc5e1b37b257b1197054083ed5 SHA-256: f284c0d20d584569d876cb7aab3a72e5e21634d0753368955f610b9d91d0f428
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.003 Windows Command Shell

The PDF file contains a large number of external links, many of which point to domains that appear to be part of a link farm. The 'SE_LOLBIN_RUN_COMMAND' heuristic indicates that the document contains instructions for executing Windows scripting tools, suggesting an intent to download and execute further payloads. The document body, though heavily obfuscated, contains text related to sheet music, which is likely a lure to encourage users to click the malicious links.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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://movimientomexicano2018.org/uploads/1/3/0/9/130969796/130969796.html#arabesque+sheet+music+piano+pdf
    • http://claypottsbuildingservices.net/uploads/1/3/0/7/130740003/5016298.pdf
    • http://mscproofs.com/uploads/1/3/0/8/130814401/442578fd.pdf
    • http://wificonnectedappliances.com/uploads/1/3/1/4/131437402/3770997.pdf
    • http://datafluxvoicevideodatasolutions.com/uploads/1/3/1/3/131379699/4331c643f1681.pdf
    • http://tecnocamp.academy/uploads/1/3/0/6/130621700/712411.pdf
    • http://datafluxvoicevideodatasolutions.com/uploads/1/3/1/3/131379699/43
    • 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_off00009966.bin
baf0245ea290ba1c19f402331c8c2d6d960034c9544574af20abd4eeed984b69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9966 10772 bytes

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