Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bd7980d61ecd378…

MALICIOUS

PDF

39.0 KB Created: 2020-04-04 05:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 686eadd01e64a5c5b9bb15f9878c2f18 SHA-1: 335ad12a99432f04664f4e918403dc445801298a SHA-256: 2bd7980d61ecd37855b8d399d2573691c4306d23cf51708a6ecde6428cc67267
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are dynamically generated and point to PDF files hosted on various domains. The document body text, though partially obfuscated, contains the phrase "Libros sobre capitalismo pdf" and references the wkhtmltopdf tool, suggesting a lure to SEO-optimized content. The primary attack pattern involves tricking users into clicking these links, which likely lead to further malicious content or phishing pages.

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://monzepm.com/uploads/1/3/0/5/130588607/130588607.html#libros+sobre+capitalismo+pdf
    • http://heyheylovely.com/uploads/1/3/0/8/130814469/7183825.pdf
    • http://dannykatzvoice.com/uploads/1/3/0/6/130621845/xiwut.pdf
    • http://jcolewy.com/uploads/1/3/0/5/130590770/f8bad80a6.pdf
    • http://tooprettyforjail.net/uploads/1/3/0/9/130969243/ravewibat_lebipafi_ruxizofuloribaw_gotikoxuvax.pdf
    • http://crystalwelch.com/uploads/1/3/0/4/130483847/86f5a409509.pdf
    • http://brightwayllc.com/uploads/1/3/1/3/131383964/8ff70ee35dd10.pdf
    • http://promotionsbyweb.net/uploads/1/3/1/0/131071183/lopozajagi_botodoribe_wixuxenazil.pdf
    • http://adhdcoachchicago.net/uploads/1/3/0/2/130289198/c360bc2bb9.pdf
    • http://carbonsoccer.com/uploads/1/3/0/6/130604046/83c9b52d79.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_off00006d79.bin
570fc94b2eba2b8955b1dd75190e224cdcc9f88aaa086cb494b9e5a56862de43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D79 9036 bytes

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