Malicious PDF — malware analysis report

Static analysis result for SHA-256 436870973b00953c…

MALICIOUS

PDF

35.3 KB Created: 2020-03-26 10:09:31 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b678764551e8ae61ec0e1d46aecc28b2 SHA-1: 177fe3481bfc5623588a63e3add1b29942062f9c SHA-256: 436870973b00953ce6732cb3b6b395881d11b0a877bd03aa4da458204967c82e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links, many pointing to PDF files hosted on various domains, which is indicative of a link farm or SEO manipulation tactic. One of the primary links directs to 'litecoinrealestate.com', suggesting a potential lure related to cryptocurrency or financial scams. No scripts were extracted, and the document body is heavily obfuscated, but the sheer volume of outbound links and the ML classification strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://litecoinrealestate.com/uploads/1/3/0/8/130813427/130813427.html#the+imitation+game+movie+watch+online+free
    • http://mta-sts.localhost.ladommatos.com/uploads/1/3/0/2/130270752/8856321.pdf
    • http://kollab.org/uploads/1/3/0/5/130543020/5270861.pdf
    • http://creativelearningco.com/uploads/1/3/0/5/130544118/9110972.pdf
    • http://www.vickerymeadowsummeracademy.com/uploads/1/3/0/5/130543279/jilevikutewejo.pdf
    • http://www.eswirdeinmal.com/uploads/1/3/0/7/130775902/jobaninikefenuluza.pdf
    • http://karolin-schmidt.com/uploads/1/3/0/5/130590296/rawawilobiwe.pdf
    • http://realwebstack.com/uploads/1/3/0/6/130621614/fedodomad.pdf
    • http://migrationmileswf.org/uploads/1/3/0/6/130603895/nafulufewesud.pdf
    • http://mx.mwtac.com/uploads/1/3/0/6/130621178/gafozexozaforupafe.pdf
    • http://michael-ortiz-design.com/uploads/1/3/0/7/130775665/pazipu_texirebape_zufupafoki.pdf
    • http://webmail.gr8tjob.com/uploads/1/3/0/5/130588518/7024936.pdf
    • http://www.outside-of-the-lines.com/uploads/1/3/0/5/130539102/1421694.pdf
    • http://smallbusinesswebdesign.company/uploads/1/3/0/3/130323962/papobujunewem.pdf
    • http://sunshinetanningandmore.com/uploads/1/3/0/7/130776811/06cef285abc301.pdf
    • http://adentanewzealand.com/uploads/1/3/0/3/130323163/bf997.pdf
    • http://www.falulapeacock.com/uploads/1/3/0/6/130603995/a425cd305.pdf
    • http://sinsonn.com/uploads/1/3/1/0/131070805/javafezewonimumerol.pdf
    • http://paalnar.com/uploads/1/3/1/0/131069840/muzevanuti.pdf
    • http://internetstudiescenter.net/uploads/1/3/0/5/130590545/c608319921.pdf
    • http://mytimemassaggi.com/uploads/1/3/1/1/131164157/gazinobefewukur.pdf
    • http://www.roxiesfunko.net/uploads/1/3/0/9/130969440/5519784.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_off000060d8.bin
4fb43410e0530107f849b20eb98d28d5e25e62c9c77ad8b713880a5ae5d600ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D8 7820 bytes

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