Malicious PDF — malware analysis report

Static analysis result for SHA-256 d984264e7fe8a761…

MALICIOUS

PDF

37.6 KB Created: 2020-04-14 12:16:43 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9b72adaa6ed68d6c27207133eae139f7 SHA-1: 48cb143ec0704b033c5ae975e37815f5af7ee96d SHA-256: d984264e7fe8a7610d973f216730b8dfd563b33df6f2865c6a0d457891750792
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to distribute malicious content. The document body, though partially obfuscated, includes a URL that appears to be part of this link farm. The ML classifier strongly indicated maliciousness, supporting the assessment of a malicious PDF.

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://sellingmycivicex.com/uploads/1/3/1/4/131438617/131438617.html#punjabi+song+dance+video+2018
    • http://juliesjewelryboutique.com/uploads/1/3/0/5/130590482/zanemereza.pdf
    • http://westvalleyotc.com/uploads/1/3/1/6/131637055/mubajijevefimop.pdf
    • http://creativelookshairstudio.com/uploads/1/3/0/5/130540280/4577408.pdf
    • http://pricewalkerconsultancy.com/uploads/1/3/1/6/131606746/mulelujazofiwosite.pdf
    • http://joliepapillonbycathywallace.com/uploads/1/3/0/5/130550743/519759537ad.pdf
    • http://nkfiteens.org/uploads/1/3/1/4/131483550/1293684.pdf
    • http://fynamics.org/uploads/1/3/0/5/130539111/8622660.pdf
    • http://sattv.info/uploads/1/3/0/7/130740110/74c329635a88.pdf
    • http://klattnc.com/uploads/1/3/0/6/130621505/cdb03f74d201e0d.pdf
    • http://nu-md.org/uploads/1/3/1/3/131379420/tudisol-zeredinixo-nuwanikexexerig-tikib.pdf
    • http://noroplan.com/uploads/1/3/1/1/131163957/1622480.pdf
    • http://naiabeachstores.com/uploads/1/3/1/3/131381422/958339.pdf
    • http://9f60mcb518.com/uploads/1/3/1/0/131070843/fawumalirokuf-zijudata.pdf
    • http://eleonasroyalgardens.info/uploads/1/3/1/4/131438323/adf76e307.pdf
    • http://buildmywinecellar.com/uploads/1/3/0/6/130620710/juraxo_wukemopopu_gumedogoseloke_babajopezojow.pdf
    • http://nu-md.org/uploads/1/3/1
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061da.bin
d0f23d9d11dad144bc883ee0329f5b805dd5966d1f16d8f6f10c2f417f609dc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DA 7780 bytes
font_01_sfnt_off0000803f.bin
bb66d78edca8aa75a8db461931e44ad6eab12e4cd439df836d92d13c6ef6c22d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x803F 2668 bytes

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