Malicious PDF — malware analysis report

Static analysis result for SHA-256 57de6e40e64c9157…

MALICIOUS

PDF

40.8 KB Created: 2020-05-20 10:12:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45e202cf0105cf06144b0a88f67c0370 SHA-1: 58703fd5a883be6e65d7259cad6f8594f74da92c SHA-256: 57de6e40e64c91575ab8225772aded41035d2aeaee17ba50a90a05ccc4bfd0b9
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though heavily obfuscated, also contains some of these URLs. This suggests a link farm or redirection scheme, likely intended to drive traffic or distribute further malicious payloads. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://tamcoh.org/uploads/1/3/0/9/130969480/130969480.html#libros+de+emprendedores
    • http://milklegs.org/uploads/1/3/0/4/130476456/mowibemanofo_menuluxedivufex.pdf
    • http://relaxtravel-clean.com/uploads/1/3/0/8/130813799/1bca4f0bb53d.pdf
    • http://libbysdance.com/uploads/1/3/1/6/131637211/befow_telulalefajod_fizuni_kurimubati.pdf
    • http://yahmonhemp.com/uploads/1/3/0/6/130620389/volanilimotow-jaxobudejoguzag-dawofofudap.pdf
    • http://candleandcocktail.com/uploads/1/3/0/8/130814718/vopasipurama.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_off00007159.bin
38864b5f8068291cb65409e67e4022ed8d683ea682a57d3c97313b11b4de9c58
pdf-font-stream PDF embedded font (sfnt) at offset 0x7159 11704 bytes