Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ee2b34c1ae7199…

MALICIOUS

PDF

37.8 KB Created: 2020-04-04 06:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ba06c9b835491255eeb7eb972cfbdf99 SHA-1: 96ccd55a3e9ab5d7f617837742938bfe7c52c358 SHA-256: e6ee2b34c1ae719969d9d584b45819ae67f3f699e7e2794adab9e1da3ce16189
92 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with a high density of external URIs pointing to various domains. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is a malicious technique to distribute links. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the sheer volume of links indicates an intent to redirect users to potentially harmful content.

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://falkenberglunch.com/uploads/1/3/1/3/131380413/131380413.html#88+zibu+symbols
    • http://massage-hypnotherapy-nlp.com/uploads/1/3/0/5/130551687/gorefupoxa.pdf
    • http://bluejaywritings.com/uploads/1/3/0/6/130604696/4131346.pdf
    • http://new-jersey-trucking-accident-lawyers.com/uploads/1/3/0/6/130604098/c884810ff4f85.pdf
    • http://eyeninemusic.com/uploads/1/3/0/6/130639673/512e7c45faf5426.pdf
    • http://srzlending.com/uploads/1/3/0/8/130874101/rekuki_zejulipev_mirokad.pdf
    • http://kurtthum.org/uploads/1/3/0/2/130272500/pujedukolepa-busapegexow-ruludade-jimetesir.pdf
    • http://rockymountainpropertyservice.com/uploads/1/3/0/7/130738696/pusoxisepujinozub.pdf
    • http://tdpropertymaintenance.net/uploads/1/3/1/4/131438296/tirewovito.pdf
    • http://taylorspeech.com/uploads/1/3/1/4/131453288/mojogukekoj.pdf
    • http://kehoetelematics.com/uploads/1/3/0/6/130621890/wazigogut.pdf
    • http://acadianarefinishing.com/uploads/1/3/0/2/130272505/b303573.pdf
    • http://axis-sante-msd.com/uploads/1/3/0/6/130620764/8f38dc16f71a68.pdf
    • http://goldencareerinc.com/uploads/1/3/0/6/130620640/letuxowipuga-topavefavi-musale-dilodewusaji.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_off00006b7d.bin
8845394dbe6345837f9dda6c8a745a990eeac131c07e7b6c41d788833d4a87ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7D 8124 bytes

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