Malicious PDF — malware analysis report

Static analysis result for SHA-256 57777fd2ad37bea3…

MALICIOUS

PDF

34.6 KB Created: 2020-04-13 03:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6a3091d53764523d51e9a0e89f72123c SHA-1: 7ae7325a8920ce176a4a5f0bdee3e948a1412128 SHA-256: 57777fd2ad37bea323bd459e24993cac395fba892b3d5f7cbb12a51934258843
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many of which point to PDF files with numeric slugs, indicating a link farm or SEO abuse tactic. The document body, though heavily obfuscated, contains a URL that is also present in the extracted URLs. This suggests the primary purpose is to redirect users to potentially malicious content hosted on these external domains. 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://premierglobalife.com/uploads/1/3/0/4/130476148/130476148.html#mmpi+2+test+online+espa%C3%B1ol
    • http://twistedsugarut.com/uploads/1/3/0/3/130323705/8c611c.pdf
    • http://chefbar.com/uploads/1/3/0/6/130604162/5502890.pdf
    • http://toogiephotography.com/uploads/1/3/0/5/130539072/7c4b1a6099624c0.pdf
    • http://rambunction.net/uploads/1/3/0/6/130603710/9148390.pdf
    • http://thecanteenon13.com/uploads/1/3/1/4/131437194/9857059.pdf
    • http://madeinmokena.com/uploads/1/3/0/7/130739087/688e577462.pdf
    • http://allysings.com/uploads/1/3/0/3/130379635/gadebisifan.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_off00005dc9.bin
7bef53a920b512fa27a347114d72c986c2e3e12acce26ec650cb1cea6229708d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC9 8576 bytes

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