Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb1a5a22fab7fb11…

MALICIOUS

PDF

35.3 KB Created: 2020-05-24 02:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c220ac8839cf4369ebddca014ed6324b SHA-1: 9d4413410e67a5b336a6c808f65fef909251e078 SHA-256: cb1a5a22fab7fb117f3cb6e3c0e3133b0d8572e01e74ba3dfaef5f051c9966f2
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique commonly used for SEO manipulation or to distribute malicious payloads. The 'PDF_SEO_LINK_FARM' heuristic firing confirms this behavior, indicating a mass of external PDF links. The ML classifier also strongly flagged this file as malicious. The embedded URLs likely lead to further stages of an attack or phishing content.

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://travelbysharon.voyagerwebsites.com/uploads/1/3/0/7/130775822/130775822.html#aguner+poroshmoni+rabindra+sangeet
    • http://operacionfiesta.com.ar/uploads/1/3/0/3/130323597/danulujapagerez-jekavefabisafu-lelinaxalir-pezebopiw.pdf
    • http://smtp.wbrental.com/uploads/1/3/0/7/130739267/nidibitovovom-pufefa.pdf
    • http://shoptrouvaille.com/uploads/1/3/0/8/130874218/9568a6449d5.pdf
    • http://mrdata.shop/uploads/1/3/0/8/130814788/lilimobuku_kigatoxomaw_tevalegidoz.pdf
    • http://tomzachwieja.com/uploads/1/3/0/6/130639673/05b815.pdf
    • http://linerleak.pro/uploads/1/3/0/7/130775119/8101762.pdf
    • http://freebirdtourandtravel.com/uploads/1/3/0/6/130621279/9074667.pdf
    • http://vitalitysportsmassage.com/uploads/1/3/0/6/130604152/2960445.pdf
    • http://woodriverflyfishing.com/uploads/1/3/0/7/130775515/lugig_tunekala.pdf
    • http://nio.gr/uploads/1/3/0/8/130814126/9542464.pdf
    • http://moanalipopo.com/uploads/1/3/0/6/130621509/739c2e2b3a.pdf
    • http://grfinancial.net/uploads/1/3/0/2/130289247/voxivezajaka_zigewivu.pdf
    • http://colisterallsaints.com/uploads/1/3/0/6/130605152/lizake-petidawewowenoj-zidibupozoma.pdf
    • http://rushfactory.eu/uploads/1/3/1/3/131383737/9324179.pdf
    • http://siegelshakes.shop/uploads/1/3/0/6/130620618/1225900.pdf
    • http://stocktonironandornamental.com/uploads/1/3/0/5/130589374/jaborevawurabe_koronema.pdf
    • http://chitowngala.com/uploads/1/3/0/6/130621645/zaraseririk.pdf
    • http://kristintoneyoga.com/uploads/1/3/0/4/130436130/denujutaj_vudewesojap_tikebupatenawip.pdf
    • http://allsoulsbraintree.com/uploads/1/3/0/5/130545627/67527f8.pdf
    • http://specialfinanceusa.com/uploads/1/3/1/6/131607131/lewinoborufifiwexow.pdf
    • http://davethielrenovations.com/uploads/1/3/0/7/130776755/2812751.pdf
    • http://bobhebert2019.com/uploads/1/3/0/5/130589020/zawogiduvopadariw.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_off00005dd1.bin
8c611ee684559914e3a449db3b1e36fa0e60357e804c62192aedaa46d3e69f8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD1 10304 bytes

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