Malicious PDF — malware analysis report

Static analysis result for SHA-256 25eb4269d79dfdff…

MALICIOUS

PDF

38.8 KB Created: 2020-05-13 03:52:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 986e4c1991e69586e124adc3f30c3d1f SHA-1: 5846f0a613f72238099be3c76d0272bd98d61be2 SHA-256: 25eb4269d79dfdfffd4b961eebd1b1c728dfcc9776e1f9f34f0a867756ad0cf5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, a technique often used for SEO spam or to distribute further malicious content. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure and numerous external links suggest a delivery mechanism for potentially harmful content hosted on the listed domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://lisananni.com/uploads/1/3/0/5/130590126/130590126.html#go+template+array+length
    • http://brandyspearlsandmore.com/uploads/1/3/0/5/130588333/wutulugebejel.pdf
    • http://texastasteofheaven.com/uploads/1/3/0/6/130603916/getadowotug.pdf
    • http://cakeballstogo.com/uploads/1/3/1/0/131071262/retejotezakesalode.pdf
    • http://theyellowvanfurnitureco.com/uploads/1/3/1/8/131856242/ca399db75ccc89.pdf
    • http://412nwells.com/uploads/1/3/0/8/130874543/lajojaxipixun-judaj-dawagonuruweku-luvir.pdf
    • http://maxwellbodyworks.net/uploads/1/3/0/7/130740498/293876.pdf
    • http://baisertransport.net/uploads/1/3/1/4/131408838/xupap.pdf
    • http://willtoprosper.com/uploads/1/3/1/0/131070195/131191.pdf
    • http://botoxbuyersguide.com/uploads/1/3/0/2/130289277/56dbee.pdf
    • http://wellscustomhomes.net/uploads/1/3/0/5/130540240/cf22caf47.pdf
    • http://osteofit.ch/uploads/1/3/0/6/130604944/403389.pdf
    • http://esavvie.com/uploads/1/3/0/7/130775934/3248883.pdf
    • http://lucohybridosa.store/uploads/1/3/1/8/131858419/5844587.pdf
    • http://fusionmedaesthetics.com/uploads/1/3/0/4/130435499/a0e4239592830.pdf
    • http://brightcoats.com/uploads/1/3/1/3/131398440/roripakegin_zakiduvuvop_bukafugafami.pdf
    • http://myludingtontherapy.com/uploads/1/3/1/3/131383657/7713393.pdf
    • http://alexanderstarr.com/uploads/1/3/0/6/130639542/132846.pdf
    • http://happywaytrucking.com/uploads/1/3/0/7/130739970/a0c9c.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_off00006c14.bin
5583bb631d4d1acb4197149758411d1bea6539293ea000e517755f4aaf1c668f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C14 10424 bytes

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